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November 2021
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Physics 101 Mechanics
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November 25, 2021
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November 25 of 2021
Convert 8.5x10-37joules to kilojoules per mole
A fluid of specific gravity 1.4 is flowing through a horizontal conduit at a velocity 7.5 m/s before descending 11 m to a lower portion of the conduit where it travels horizontally at 5.0 m/s. What is the pressure difference (P_lower - P_upper) between the lower portion and the upper portion of…
A gate 4.00 m wide and 2.00 high weighs 500 N. Its center of gravity is at its center, and it is hinged at A and B. (Note the hinges are positioned at the top and bottom of the left side of the gate.) To relieve the strain on the top hinge, a wire CD is connected as shown in the figure. The…
How to calculate the tension T in the rope
Two objects are attached to ropes that are attached to two wheels on a common axle, as shown in Figure 9-60. The two wheels are attached. together so that they form a single rigid object. The moment of inertia of the rigid object is 40 kg-m². The radii or the wheels are R? = 1.2 m and R? = 0.40…
I dont know how to solve it.Can anyone explain the question please
A 2.00 kg rock has a horizontal velocity of magnitude 12.0 m/s when it is at point P as shown in the figure.(a) At this instant, what are the magnitude and direction of its angular momentum relative to point O?(b) If the only force acting on the rock is its weight, what is the rate of change…
A 2.3 kg cart is rolling across a frictionless, horizontal track toward a 1.5 kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the cart’s velocity is -1.9…
Figure shows four vectors A? , B?? , C? , and D?? with magnitude A = 4, B = 3, C = 7 and D = 9. Find out the angle between the vectors 2????A?? × B?? and (A? ? C?) × (B?? + D??)
Suppose that the force acting on a particle is factorable into one of the following
A cricket ball of mass 250 g collides with a bat with velocity 10 m/s and returns with the same velocity within 0.01 second. The force acted on bat is
A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately
A force of 10 Newton acts on a body of mass 20kg for 10 seconds. Change in its momentum is
A car, moving with a speed of 50 km/hr, can be stopped by brakes after at least 6m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is
A particle starts from rest, accelerates at 2 m/s2 for 10s and then goes for constant speed for 30s and then decelerates at 4 m/s2 till it stops. What is the distance travelled by it
A body of 5 kg is moving with a velocity of 20 m/s. If a force of 100N is applied on it for 10s in the same direction as its velocity, what will now be the velocity of the body
A constant force acts on a body of mass 0.9 kg at rest for 10s. If the body moves a distance of 250 m, the magnitude of the force is (a) 3N (b) 3.5N (c) 4.0N (d) 4.5N
The motion of a particle is described by the equation u = at . The distance travelled by the particle in the first 4 seconds (a) 4a (b) 12a (c) 6a (d) 8a
The velocity of a body depends on time according to the equation v = 20 +0.1t . The body is undergoing (a) Uniform acceleration (b) Uniform retardation (c) Non-uniform acceleration (d) Zero acceleration
The initial velocity of a body moving along a straight line is 7 m / s . It has a uniform acceleration of 2 4 m / s . The distance covered by the body in the 5th second of its motion is (a) 25 m (b) 35 m (c) 50 m (d) 85 m
A particle starting from rest travels a distance x in first 2 seconds and a distance y in next two seconds, then
An electron starting from rest has a velocity that increases linearly with the time that is v =kt, where k =2m / sec 2. The distance travelled in the first 3 seconds will be
The acceleration of a moving body can be found from (a) Area under velocity-time graph (b) Area under distance-time graph (c) Slope of the velocity-time graph (d) Slope of distance-time graph
The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of the acceleration of the body is (a) Increasing with time (b) Decreasing with time (c) Constant but not zero (d) Zero
A body under the action of several forces will have zero acceleration (a) When the body is very light (b) When the body is very heavy (c) When the body is a point body (d) When the vector sum of all the forces acting on it is zero
A particle experiences a constant acceleration for 20 sec after starting from rest. If it travels a distance 1 S in the first 10 sec and a distance 2 S in the next 10 sec, then
An electron starting from rest has a velocity that increases linearly with the time that is v ?=kt, where k =2m / sec 2. The distance travelled in the first 3 seconds will be
.In 1.0 sec. a particle goes from point A to point B, moving in a semicircle of radius 1.0 m as shown in the figure. The magnitude of the average velocity is :
A woman with mass 50 kg is standing on the rim of a large disk that is rotating at 0.50 rev/s about an axis through its center. The disk has mass 110 kg and radius 4.0 m. Calculate the magnitude of the total angular momentum of the woman plus disk system. (Assume that you can treat the woman as…
2. A square metal plate 0.180 m on each side is pivoted about an axis through point O at its center and perpendicular to the plate. Calculate the net torque about this axis due to three forces shown in the figure if the magnitudes of the forces are F1 = 18.0 N, F2 = 26.0 N and F3 = 14.0 N. The…
Q. 17 A and B are thin tenses. 1. 2 and 3 are representative wave fronts of incident and refracted monochromatic light with distances from the tenses as shown. The radii of curvature of wave fronts 2 and 3 are 4m and 7m respectively. Find the focal length (modulus value) of lens B in…
Calculate the net torque about point O for the two forces applied as in Figure below. The rod and both forces are in the plane of the page.
A ball is thrown at t = 0 at an angle, ?i = 53O above the horizontal with an initial velocity v0. The horizontal component of the initial velocity is, v0x = 12 m /s(a) Write the vertical component of the initial velocity, v0y, and also write the velocity and acceleration of the ball at the…
A block, M = 5 kg starts from rest and moves down the inclined plane making angle ? = 37O with the horizontal. The kinetic friction force acting on the block is, fk = 10 N, see the figure. Draw the free body diagram and find the acceleration of the block and the coefficient of kinetic friction…
Find the horizontal and vertical components of the initial velocity. Find the maximum height reached by the stone.
At t =0 a stone is thrown with an initial velocity vi = 15 m/s at an angle of ?i = 53O above the horizontal. (Take g = 10 m/s2, cos53O = 0.6, sin53O = 0.8,). 3-a) Find the horizontal and vertical components of the initial velocity. Find the maximum height reached by the stone.
For the above vectors, find the scalar product, A . B. What is the cosine of the angle between the vector A and the + x axis.
a)What amount of energy must be provided through isochoric heating for one mole of monoatomic gas of molar mass M to have a temperature increase of 1.0 K? b)What amount of energy must be provided through isobaric heating for one mole of monoatomic gas of molar mass M to have a temperature…
A cyclic process involving 1.0 mole of ideal gas is shown in (Figure 1). A)Determine the work done on the gas by the environment during each step of the cycle. B) Determine the net work done on the gas WEnvonGas. C) Find the work that the gas does on the environment; it is equal to…
0.100 kg of water at 10?C is added to 0.300 kg of soup at 50?C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg??C. The soup has the same specific heat as water. Estimate the entropy change of…
0.100 kg of water at 10°C is added to 0.300 kg of soup at 50°C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg·°C. The soup has the same specific heat as water.
0.100 kg of water at 10°C is added to 0.300 kg of soup at 50°C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg°C. The soup has the same specific heat as water.
The figure shows the cross section of a wall made of threelayers. The thicknesses of the layers are ????1, ????2 =0.7????1 , ????3 = 0.35????1. The thermal conductivities are????1 , ????2 = 0.9????1 ???????????? ????3 = 0.8????1 . The temperatures at theleft and the right sides of the wall are…
What is the speed of a satellite that orbits about a star with a mass of \( 3.66 \times 10^{32} \mathrm{~kg} \) along a circular path with a radius of \( 4.75 \times 10^{14} \mathrm{~m} \) ? \( 4.79 \times 10^{3} \mathrm{~m} / \mathrm{s} \) \( 3.30 \times 10^{3} \mathrm{~m} / \mathrm{s} \) \(…
What May be the Average discharge in m3/ day during a month of 30 days from a dam with the lake Area of 15km2. If total precipitation during the month on the reservoir was 21.7cm, the total evaporation 8.9cm seepage loss 3.2cm, average inflow into the reservoir was 6.2m3/s and the reservoir…
A sheet of lead is heated up from 72.9 °C to 128 °C. How many percent has its area increased?
Question 2: The brakes of a car are applied, causing it to slow down at a rate of \( 10 \frac{f t}{s^{2}} \). Knowing that the car stops in \( 300 f t \), determine \( (a) \) how fast the car was traveling immediately before the brakes were applied, \( (b) \) the time required for the car to…
Convert 8.5x10-37joules to kilojoules per mole
A fluid of specific gravity 1.4 is flowing through a horizontal conduit at a velocity 7.5 m/s before descending 11 m to a lower portion of the conduit where it travels horizontally at 5.0 m/s. What is the pressure difference (P_lower - P_upper) between the lower portion and the upper portion of…
A gate 4.00 m wide and 2.00 high weighs 500 N. Its center of gravity is at its center, and it is hinged at A and B. (Note the hinges are positioned at the top and bottom of the left side of the gate.) To relieve the strain on the top hinge, a wire CD is connected as shown in the figure. The…
Two objects are attached to ropes that are attached to two wheels on a common axle, as shown in Figure 9-60. The two wheels are attached. together so that they form a single rigid object. The moment of inertia of the rigid object is 40 kg-m². The radii or the wheels are R? = 1.2 m and R? = 0.40…
I dont know how to solve it.Can anyone explain the question please
A 2.3 kg cart is rolling across a frictionless, horizontal track toward a 1.5 kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certain instant before the cart’s velocity is -1.9…
Figure shows four vectors A? , B?? , C? , and D?? with magnitude A = 4, B = 3, C = 7 and D = 9. Find out the angle between the vectors 2????A?? × B?? and (A? ? C?) × (B?? + D??)
Suppose that the force acting on a particle is factorable into one of the following
A cricket ball of mass 250 g collides with a bat with velocity 10 m/s and returns with the same velocity within 0.01 second. The force acted on bat is
A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately
A force of 10 Newton acts on a body of mass 20kg for 10 seconds. Change in its momentum is
A car, moving with a speed of 50 km/hr, can be stopped by brakes after at least 6m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is
A particle starts from rest, accelerates at 2 m/s2 for 10s and then goes for constant speed for 30s and then decelerates at 4 m/s2 till it stops. What is the distance travelled by it
A body of 5 kg is moving with a velocity of 20 m/s. If a force of 100N is applied on it for 10s in the same direction as its velocity, what will now be the velocity of the body
A constant force acts on a body of mass 0.9 kg at rest for 10s. If the body moves a distance of 250 m, the magnitude of the force is (a) 3N (b) 3.5N (c) 4.0N (d) 4.5N
The motion of a particle is described by the equation u = at . The distance travelled by the particle in the first 4 seconds (a) 4a (b) 12a (c) 6a (d) 8a
The velocity of a body depends on time according to the equation v = 20 +0.1t . The body is undergoing (a) Uniform acceleration (b) Uniform retardation (c) Non-uniform acceleration (d) Zero acceleration
The initial velocity of a body moving along a straight line is 7 m / s . It has a uniform acceleration of 2 4 m / s . The distance covered by the body in the 5th second of its motion is (a) 25 m (b) 35 m (c) 50 m (d) 85 m
A particle starting from rest travels a distance x in first 2 seconds and a distance y in next two seconds, then
An electron starting from rest has a velocity that increases linearly with the time that is v =kt, where k =2m / sec 2. The distance travelled in the first 3 seconds will be
The acceleration of a moving body can be found from (a) Area under velocity-time graph (b) Area under distance-time graph (c) Slope of the velocity-time graph (d) Slope of distance-time graph
The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of the acceleration of the body is (a) Increasing with time (b) Decreasing with time (c) Constant but not zero (d) Zero
A body under the action of several forces will have zero acceleration (a) When the body is very light (b) When the body is very heavy (c) When the body is a point body (d) When the vector sum of all the forces acting on it is zero
A particle experiences a constant acceleration for 20 sec after starting from rest. If it travels a distance 1 S in the first 10 sec and a distance 2 S in the next 10 sec, then
An electron starting from rest has a velocity that increases linearly with the time that is v ?=kt, where k =2m / sec 2. The distance travelled in the first 3 seconds will be
.In 1.0 sec. a particle goes from point A to point B, moving in a semicircle of radius 1.0 m as shown in the figure. The magnitude of the average velocity is :
A woman with mass 50 kg is standing on the rim of a large disk that is rotating at 0.50 rev/s about an axis through its center. The disk has mass 110 kg and radius 4.0 m. Calculate the magnitude of the total angular momentum of the woman plus disk system. (Assume that you can treat the woman as…
A ball is thrown at t = 0 at an angle, ?i = 53O above the horizontal with an initial velocity v0. The horizontal component of the initial velocity is, v0x = 12 m /s(a) Write the vertical component of the initial velocity, v0y, and also write the velocity and acceleration of the ball at the…
A block, M = 5 kg starts from rest and moves down the inclined plane making angle ? = 37O with the horizontal. The kinetic friction force acting on the block is, fk = 10 N, see the figure. Draw the free body diagram and find the acceleration of the block and the coefficient of kinetic friction…
Find the horizontal and vertical components of the initial velocity. Find the maximum height reached by the stone.
At t =0 a stone is thrown with an initial velocity vi = 15 m/s at an angle of ?i = 53O above the horizontal. (Take g = 10 m/s2, cos53O = 0.6, sin53O = 0.8,). 3-a) Find the horizontal and vertical components of the initial velocity. Find the maximum height reached by the stone.
For the above vectors, find the scalar product, A . B. What is the cosine of the angle between the vector A and the + x axis.
a)What amount of energy must be provided through isochoric heating for one mole of monoatomic gas of molar mass M to have a temperature increase of 1.0 K? b)What amount of energy must be provided through isobaric heating for one mole of monoatomic gas of molar mass M to have a temperature…
A cyclic process involving 1.0 mole of ideal gas is shown in (Figure 1). A)Determine the work done on the gas by the environment during each step of the cycle. B) Determine the net work done on the gas WEnvonGas. C) Find the work that the gas does on the environment; it is equal to…
0.100 kg of water at 10?C is added to 0.300 kg of soup at 50?C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg??C. The soup has the same specific heat as water. Estimate the entropy change of…
0.100 kg of water at 10°C is added to 0.300 kg of soup at 50°C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg·°C. The soup has the same specific heat as water.
0.100 kg of water at 10°C is added to 0.300 kg of soup at 50°C. Assume complete transfer of thermal energy from soup to the water, with no transfer of energy to the environment. Specific heat of water is 4180 J/kg°C. The soup has the same specific heat as water.
What is the speed of a satellite that orbits about a star with a mass of \( 3.66 \times 10^{32} \mathrm{~kg} \) along a circular path with a radius of \( 4.75 \times 10^{14} \mathrm{~m} \) ? \( 4.79 \times 10^{3} \mathrm{~m} / \mathrm{s} \) \( 3.30 \times 10^{3} \mathrm{~m} / \mathrm{s} \) \(…
What May be the Average discharge in m3/ day during a month of 30 days from a dam with the lake Area of 15km2. If total precipitation during the month on the reservoir was 21.7cm, the total evaporation 8.9cm seepage loss 3.2cm, average inflow into the reservoir was 6.2m3/s and the reservoir…
A sheet of lead is heated up from 72.9 °C to 128 °C. How many percent has its area increased?
Question 2: The brakes of a car are applied, causing it to slow down at a rate of \( 10 \frac{f t}{s^{2}} \). Knowing that the car stops in \( 300 f t \), determine \( (a) \) how fast the car was traveling immediately before the brakes were applied, \( (b) \) the time required for the car to…