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December 2021
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Physics 101 Mechanics
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December 13, 2021
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December 13 of 2021
you are on s apace walk when your tether become disconnected and you start to slowly float way from the space station. Fortunately you have many massive tools with you and figure that you can propel yourself back ward to the station by throwing objects as fast possible in the opposite…
how should you build a car in order to reduce the like hood of injury in a head on crash? a. Make the front bumper be rigid b. Make the front of the car crumble when large forces are applied c. Make the front of the car crumble easily when small forces are applied d. make the front of…
two people stand on opposite ends of a long sled on frictionles ice. The sled is oriented in the east west direction and everything is initially at rest. The western person then throws a ball eastward the eastern person, who catches it. The sled a. move eastward and then ends up at…
two balls of equal mass, one made of rubber and other made of putty, are dropped from the same height above a horizontal surface. The rubber ball bounces up elastically, whereas the putty ball come to rest after hitting the surface. Assume that in both cases, the duration of the collision is…
An apple falls from a tree. which of the following does not explain why the apple speeds up as it falls. a. The momentum of earth -apple system is conserved. b. There is downward gravitational force acting on the apple c. Gravity does positive work on the apple as it falls d. the…
You are on the second story of a building, using a rope to lower a box to your friend on the ground. The box is moving downwards at a constant velocity. Consider your system to be the box+rope. Is the work done by you on the system positive, negative or zero?
A.) Draw and label an extended free body diagram for the beam, draw each force at the location where it is exerted and label each force with the type of force and the object exerted on and exerted by. B) how much upward force does support 1 exert on the beam, explain reasoning and show work
Ball 1 is launched vertically upward. Ball 2 at the angle of 60 degrees. Ball 3 at the angle of 45 degree. Rank the speed of each in descending order (the fastest first) when they have reached the same height h. a. 1, 2, and 3 b. 1,3, and 2 c. 3,2,1 d. they all have the same speed e.…
which of following statement is true. 1. The change in your kinetic energy is the same from A to B and B to C 2. The work done by gravity is smaller for the motion from A to B than for B to C c. The work done by gravity is smaller for the motion from A to B than for B to C a. (1) only b. (2)…
A long, straight wire has a current that is increasing with time directed downward. A conductive loop exists in the plane of the page, to the right of the current carrying wire. In which direction will the induced current in the loop be?…
A rocket is being designed for a new mission which requires a total AV of 13,000 m/s . The rocket will utilize a liquid chemical propulsion system and have a large payload of 100,000 kg . The rocket will use two stages, each with a structural coefficient of 0.06 and used engines with a specific…
Please see photo
Centrifugal force
Fraph(s) (20 Points) - Plot a graph of the centrifugal force against the mass. - Plot a graph of centrifugal force against the square of the angular velocity. ucstion 1. Evaluate the slope of your graphs 2. Find the \( y \)-intercept of your slopes 3. From your graph find the value of F when \(…
3 Blocks on a friction-less table, F - G - H -> Block F mass = 4 Block G mass = 12 Block H mass = 11 Block H is pulled right by a force FA which causes acceleration of the entire system. Which block has the highest net force or do they all have the same?
The fraction of dark matter in a galaxy is estimated from the speed of stars in its halo. In a certain galaxy, stars at a distance of 27000 light years from its centre orbit with speed 2.3x10^5 m/s. The estimated mass of the visible stars inside this distance is 8.1×10^39 kg. Make the…
how to calculate maintenance pressure
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficient of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. Calculate the specific heat
A 2.50 kg stone is attached to a string 50.0 cm long and complete a horizontal circle in 0.25 s. Calculate: a. the tangential velocity b. centripetal acceleration c. tension in the string 3. Calculate the velocity at which a satellite orbits Jupiter. Acceleration due to the gravity of…
A 2.50 kg stone is attached to a string 50.0 cm long and complete a horizontal circle in 0.25 s. Calculate: a. the tangential velocity b. centripetal acceleration c. tension in the string 3. Calculate the velocity at which a satellite orbits Jupiter. Acceleration due to the gravity of…
Convert the following: a. 15.0 kg to N b. 85.0 N to kg c. 220 lb to N d. 550 N to lb.
A bullet is fired with a velocity of 200.0 m/s at an angle of 37 degrees with respect to the horizontal. Calculate: a. Horizontal and vertical component of the initial velocity of the projectile. b. the time the projectile in the air c. The maximum height of the projectile d. The range of…
8.1 Find the center of mass of each of the following: (a) Athin wire bent into the form of a three-sided, block-shaped "Ll"with each segment of equal length b (b) A quadrant of a uniform circular lamina of radius b (c) The area bounded by parabola y =x2/b and the line y =b (d)…
A plane flies from base camp to lake A, a distance of 280 km at a direction of 20 degrees north of east. After dropping off supplies, the plane flies to lake B, which is 190km and 30 degree west of north from lake A.
A rocket that weighs 8975 N on the earth is fired. The force of propulsion is 1.24 x 105 N. a. Find the mass of the rocket. b. The acceleration of the rocket. c. The velocity of the rocket at the end of 10.0 s. d. The displacement at the end of the above time frame. (10.0s)
A child is playing with a toy car of mass 0.25 kg along a smooth inclined plane which makes an angle 30 degree with the horizontal. ( 30 points) a. The car stays at rest along the inclined plane. Find the parallel and perpendicular components of the weight of the car. b. At what angle,…
Estimate the net force needed to accelerate a. a 1000 kg car at g b. a 200 g apple at the same rate
A bank robber is getting away in a car of mass 1200 kg with a speed of 100 mph . The super man is trying to stop him. What is the average net force required to stop him within a distance of 50 m? Draw a free body diagram
An object's oscillatory motion is described by the function x\left(t\right)=0.5\cos\left(30t\right)x(t)=0.5cos(30t) What is the frequency of the object (in Hertz)? Answer value
An object is thrown upwards with speed of 16 m/s. How long does it take it to reach height of 7.0 m on the way up? Neglect air resistance. A) 0.52 C) 2.4 $ D) 3.1
Show, using Kepler’s second and third laws, that the energy of a planet in an elliptical orbit is E = - (GMm/2a). Where M = solar mass, m = mass of the planet, and a = semi-major axis of of the ellipse. Formula of an ellipse: A = pi*ab. Where b = semi-minor axis. Formulae for the axis lengths…
Please explain all procedures.
Please help!
I don't understand the procedure to solve any of these. Please help!
Consider a ray of intensity passing through this medium towards an observer. The schematic is given in Fig. 2. Write the solution of the radiative transfer equation along this ray in terms of the optical depth. Assume there is no incident radiation behind the cluster (I( 1 = 0) = 0).…
When you jog, most of the food energy you use above your basal metabolic rate (BMR) ends up as internal energy that would raise your body temperature if it were not eliminated. The evaporation of perspiration is the primary mechanism for eliminating this energy. Determine the amount of water…
A car moving on a highway has a mass of 1200kg. The coefficient of friction between the tire and the car is 0.2. What acceleration will a force of 1.25X 104 N produce on the car? Draw a free body diagram.
A force of 13.0 N is necessary to keep the 3.5 kg wooden block moving along a tabletop at a uniform velocity. Calculate the coefficient of friction. Draw a free body diagram.
A force of 13.0 N is necessary to keep the 3.5 kg wooden block moving along a tabletop at a uniform velocity. Calculate the coefficient of friction. Draw a free body diagram.
A rocket that weighs 8975 N on the earth is fired. The force of propulsion is 1.24 x 105 N. a. Find the mass of the rocket. b. The acceleration of the rocket. c. The velocity of the rocket at the end of 10.0 s. d. The displacement at the end of the above time frame. (10.0s)
What force is needed to accelerate the stone of mass 22.0 kg upward at 5.00 m/s2? Draw a free body diagram.
What force is needed to accelerate the stone of mass 22.0 kg upward at 5.00 m/s2? Draw a free body diagram.
A 0.290-kg coffee mug is made from a material that has a specific heat capacity of 906 J/kg C° and contains 0.334 kg of water. The cup and water are at 25.4 °C. To make a cup of coffee, a small electric heater is immersed in the water and brings it to a boil in two minutes. Assume that the cup…
Question 5 1 pts A running deg's velocity changes from \( 2.13 \mathrm{~m} / \mathrm{st}-1.91 \mathrm{~m} / \mathrm{s} j \) to \( 1.25 \mathrm{~m} / \mathrm{st}+203 \mathrm{~m} / \mathrm{s} \hat{j} \) in a time of \( 5.0 \) s. The deg's average acceleration during that time interval is: \(…
Two identical bullets are fired horizontally with identical speeds Vo at two blocks of equal mass. The blocks rest on a frictionless horizontal surface and are made of hard steel and soft wood respectively . One bullet bounces elastically off the steel block: The other bullet becomes embedded…
Hockey puck A which is sliding with a constant velocity over a frictonless horizontal surface collides elastically with puck B, which is stationary. No external force acts on the two puck system. which of the following must be true for this collision 1. the kinetic energy of puck A is…
A very light ball bounces elastically head on off a very massive ball that is initially is at rest. The fraction of the light's ball's kinetic energy that is transferred to the massive ball is approximately a. 0 b. 1/4 c. 1/2 d. 3/4 e. 1
The baseball player of mass m leaps upward to stuff the ball through the hoop. His vertical velocity as his feet leave the floor is v0, and his center-of-mass reaches a maximum height h at which point his vertical velocity is zero. how much work is done on the player by the normal force of…
The linear density of a thin rod is given by p =cx, where c is a constant and x is the distance measured from one end. If the rod is of length b, find the center of mass.
A box started with an initial speed on the rough horizontal surface slow down because of its frictions, eventually coming out to rest. Which of the following statement is equal to the change in the kinetic energy of the box a. the momentum of the box times the distance traveled b. the…
The speed of sound is measured to be 337 m/s on a certain day what is this in km/hr?
two blocks are initially at rest on a frictionless, horizontal surface. The mass mA of block A is less than the mass mB of block B (mA<mB). you pull both blocks the same distance d along a straight line using the same constant force F. Which of the following statements comparing the kinetic…
A ball of mass m is dropped from a height h. which of the following statement is true a. the kinetic energy of the ball increases by equal amount during equal interval times b. the kinetic energy of the ball increase by equal amount over the equal intervals of distances c. Gravity does no work…
A ball of mass m is dropped from a height h. which of the following statement is true a. the kinetic energy of the ball increases by equal amount during equal interval times b. the kinetic energy of the ball increase by equal amount over the equal intervals of distances c. Gravity does no work…
you are on s apace walk when your tether become disconnected and you start to slowly float way from the space station. Fortunately you have many massive tools with you and figure that you can propel yourself back ward to the station by throwing objects as fast possible in the opposite…
how should you build a car in order to reduce the like hood of injury in a head on crash? a. Make the front bumper be rigid b. Make the front of the car crumble when large forces are applied c. Make the front of the car crumble easily when small forces are applied d. make the front of…
two people stand on opposite ends of a long sled on frictionles ice. The sled is oriented in the east west direction and everything is initially at rest. The western person then throws a ball eastward the eastern person, who catches it. The sled a. move eastward and then ends up at…
two balls of equal mass, one made of rubber and other made of putty, are dropped from the same height above a horizontal surface. The rubber ball bounces up elastically, whereas the putty ball come to rest after hitting the surface. Assume that in both cases, the duration of the collision is…
An apple falls from a tree. which of the following does not explain why the apple speeds up as it falls. a. The momentum of earth -apple system is conserved. b. There is downward gravitational force acting on the apple c. Gravity does positive work on the apple as it falls d. the…
You are on the second story of a building, using a rope to lower a box to your friend on the ground. The box is moving downwards at a constant velocity. Consider your system to be the box+rope. Is the work done by you on the system positive, negative or zero?
A.) Draw and label an extended free body diagram for the beam, draw each force at the location where it is exerted and label each force with the type of force and the object exerted on and exerted by. B) how much upward force does support 1 exert on the beam, explain reasoning and show work
Ball 1 is launched vertically upward. Ball 2 at the angle of 60 degrees. Ball 3 at the angle of 45 degree. Rank the speed of each in descending order (the fastest first) when they have reached the same height h. a. 1, 2, and 3 b. 1,3, and 2 c. 3,2,1 d. they all have the same speed e.…
which of following statement is true. 1. The change in your kinetic energy is the same from A to B and B to C 2. The work done by gravity is smaller for the motion from A to B than for B to C c. The work done by gravity is smaller for the motion from A to B than for B to C a. (1) only b. (2)…
A long, straight wire has a current that is increasing with time directed downward. A conductive loop exists in the plane of the page, to the right of the current carrying wire. In which direction will the induced current in the loop be?…
Please see photo
Centrifugal force
3 Blocks on a friction-less table, F - G - H -> Block F mass = 4 Block G mass = 12 Block H mass = 11 Block H is pulled right by a force FA which causes acceleration of the entire system. Which block has the highest net force or do they all have the same?
The fraction of dark matter in a galaxy is estimated from the speed of stars in its halo. In a certain galaxy, stars at a distance of 27000 light years from its centre orbit with speed 2.3x10^5 m/s. The estimated mass of the visible stars inside this distance is 8.1×10^39 kg. Make the…
how to calculate maintenance pressure
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficient of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. the coefficent of thermal volume expansion of water is 210x10^-6 and initially the…
the energy given off by 300 g of a particular alloy as it cools down by 50 degrees raises the temperature of 300g of water from 30 degrees to 40 degrees. The specific heat capacity of liquid water is 4186 J. Calculate the specific heat
A 2.50 kg stone is attached to a string 50.0 cm long and complete a horizontal circle in 0.25 s. Calculate: a. the tangential velocity b. centripetal acceleration c. tension in the string 3. Calculate the velocity at which a satellite orbits Jupiter. Acceleration due to the gravity of…
A 2.50 kg stone is attached to a string 50.0 cm long and complete a horizontal circle in 0.25 s. Calculate: a. the tangential velocity b. centripetal acceleration c. tension in the string 3. Calculate the velocity at which a satellite orbits Jupiter. Acceleration due to the gravity of…
Convert the following: a. 15.0 kg to N b. 85.0 N to kg c. 220 lb to N d. 550 N to lb.
A bullet is fired with a velocity of 200.0 m/s at an angle of 37 degrees with respect to the horizontal. Calculate: a. Horizontal and vertical component of the initial velocity of the projectile. b. the time the projectile in the air c. The maximum height of the projectile d. The range of…
A plane flies from base camp to lake A, a distance of 280 km at a direction of 20 degrees north of east. After dropping off supplies, the plane flies to lake B, which is 190km and 30 degree west of north from lake A.
A rocket that weighs 8975 N on the earth is fired. The force of propulsion is 1.24 x 105 N. a. Find the mass of the rocket. b. The acceleration of the rocket. c. The velocity of the rocket at the end of 10.0 s. d. The displacement at the end of the above time frame. (10.0s)
A child is playing with a toy car of mass 0.25 kg along a smooth inclined plane which makes an angle 30 degree with the horizontal. ( 30 points) a. The car stays at rest along the inclined plane. Find the parallel and perpendicular components of the weight of the car. b. At what angle,…
Estimate the net force needed to accelerate a. a 1000 kg car at g b. a 200 g apple at the same rate
A bank robber is getting away in a car of mass 1200 kg with a speed of 100 mph . The super man is trying to stop him. What is the average net force required to stop him within a distance of 50 m? Draw a free body diagram
An object's oscillatory motion is described by the function x\left(t\right)=0.5\cos\left(30t\right)x(t)=0.5cos(30t) What is the frequency of the object (in Hertz)? Answer value
An object is thrown upwards with speed of 16 m/s. How long does it take it to reach height of 7.0 m on the way up? Neglect air resistance. A) 0.52 C) 2.4 $ D) 3.1
Show, using Kepler’s second and third laws, that the energy of a planet in an elliptical orbit is E = - (GMm/2a). Where M = solar mass, m = mass of the planet, and a = semi-major axis of of the ellipse. Formula of an ellipse: A = pi*ab. Where b = semi-minor axis. Formulae for the axis lengths…
Please explain all procedures.
I don't understand the procedure to solve any of these. Please help!
When you jog, most of the food energy you use above your basal metabolic rate (BMR) ends up as internal energy that would raise your body temperature if it were not eliminated. The evaporation of perspiration is the primary mechanism for eliminating this energy. Determine the amount of water…
A car moving on a highway has a mass of 1200kg. The coefficient of friction between the tire and the car is 0.2. What acceleration will a force of 1.25X 104 N produce on the car? Draw a free body diagram.
A force of 13.0 N is necessary to keep the 3.5 kg wooden block moving along a tabletop at a uniform velocity. Calculate the coefficient of friction. Draw a free body diagram.
A force of 13.0 N is necessary to keep the 3.5 kg wooden block moving along a tabletop at a uniform velocity. Calculate the coefficient of friction. Draw a free body diagram.
A rocket that weighs 8975 N on the earth is fired. The force of propulsion is 1.24 x 105 N. a. Find the mass of the rocket. b. The acceleration of the rocket. c. The velocity of the rocket at the end of 10.0 s. d. The displacement at the end of the above time frame. (10.0s)
What force is needed to accelerate the stone of mass 22.0 kg upward at 5.00 m/s2? Draw a free body diagram.
What force is needed to accelerate the stone of mass 22.0 kg upward at 5.00 m/s2? Draw a free body diagram.
A 0.290-kg coffee mug is made from a material that has a specific heat capacity of 906 J/kg C° and contains 0.334 kg of water. The cup and water are at 25.4 °C. To make a cup of coffee, a small electric heater is immersed in the water and brings it to a boil in two minutes. Assume that the cup…
Two identical bullets are fired horizontally with identical speeds Vo at two blocks of equal mass. The blocks rest on a frictionless horizontal surface and are made of hard steel and soft wood respectively . One bullet bounces elastically off the steel block: The other bullet becomes embedded…
Hockey puck A which is sliding with a constant velocity over a frictonless horizontal surface collides elastically with puck B, which is stationary. No external force acts on the two puck system. which of the following must be true for this collision 1. the kinetic energy of puck A is…
A very light ball bounces elastically head on off a very massive ball that is initially is at rest. The fraction of the light's ball's kinetic energy that is transferred to the massive ball is approximately a. 0 b. 1/4 c. 1/2 d. 3/4 e. 1
The baseball player of mass m leaps upward to stuff the ball through the hoop. His vertical velocity as his feet leave the floor is v0, and his center-of-mass reaches a maximum height h at which point his vertical velocity is zero. how much work is done on the player by the normal force of…
The linear density of a thin rod is given by p =cx, where c is a constant and x is the distance measured from one end. If the rod is of length b, find the center of mass.
A box started with an initial speed on the rough horizontal surface slow down because of its frictions, eventually coming out to rest. Which of the following statement is equal to the change in the kinetic energy of the box a. the momentum of the box times the distance traveled b. the…
The speed of sound is measured to be 337 m/s on a certain day what is this in km/hr?
two blocks are initially at rest on a frictionless, horizontal surface. The mass mA of block A is less than the mass mB of block B (mA<mB). you pull both blocks the same distance d along a straight line using the same constant force F. Which of the following statements comparing the kinetic…
A ball of mass m is dropped from a height h. which of the following statement is true a. the kinetic energy of the ball increases by equal amount during equal interval times b. the kinetic energy of the ball increase by equal amount over the equal intervals of distances c. Gravity does no work…
A ball of mass m is dropped from a height h. which of the following statement is true a. the kinetic energy of the ball increases by equal amount during equal interval times b. the kinetic energy of the ball increase by equal amount over the equal intervals of distances c. Gravity does no work…