Home
Ask directory
Physics 101 Mechanics
October 2021
18

Physics 101 Mechanics Q&A Archive of October 18, 2021

Select Question

October 18 of 2021

The figure below shows the graph of force versus time for a baseball hit by a bat. (a) From this graph, determine the impulse (in N x S) given to the ball. (b) From this graph, determine the average force (in kN) exerted on the ball.

mass 2 = 2500kg whilst mass 3 = 7500kg

You are driving a car behind another car. Both cars are moving at speed 80 km/h. Assume your brakes are just a bit harder than the car ahead and your reaction time is 0.60 s. What minimum distance behind the car in front should you drive so that you do not crash into the car’s rear end if the…

Determine the refractive index of water at 25degree using sodium light

. Define each of the below components: • Breadboard: • LED: • Resistor:

You and your friend have decided to take advantage of a late winter snowfall by taking a toboggan out to the Sugar Bowl. Let’s assume that the combined mass of the toboggan and its riders is 130 kg and the slope is angled upwards at 20.0° above the horizontal. a) Find the magnitude of the…

I need help with chapter 1, conceptual questions 6 and 7.

What is a mole

Convert 70km to millimetre

A “rail gun” is shown in the figure below. A large current moves in a closed loop composed of fixed rails, a power supply, and a light, frictionless bar slides along the rails with perfect contacts. A 1.8 T magnetic field is perpendicular to the plane of the circuit. If the rails are a distance…

Consider releasing an upright coin from a smooth, frictionless surface. The coin has radius 0.01 m and falls sideways. Calculate the tangential velocity of the top of the coin just before the top of the coin hits the surface. You can treat the coin as a uniform disk.

Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject material as high as 500 km (or even higher) above the surface. Io has a mass of 8.93×10^22kg and a radius of 1821 km. What is the initial velocity?

a 500 n block is dragged along a horizontal surface by an applied force T at an angle 30 degree. the coefficient of kinetic friction is uk=.200 and the block moves at a Constant velocity. what is the magnitude of the applied force T in newtons

Which poisonous gas is evolved when white phosphorus is heated with Cone. NaOH solution? Write the chemical equation.

Nikolai is using a hand-operated grain mill to grind wheat berries into flour. The mill is operated by spinning a flywheel with radius R = 23 cm, which has a handle attached to the outer edge. After grinding for a few minutes at a constant angular speed ?i , he lets go of the handle and…

What is a photo diode ?

What is the velocity at time t= 2sec if initial velocity is 5m/s and acceleration is 2m/s2 . Assuming uniform acceleration

The figure below shows the drive train of a bicycle that has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long. The cyclist pedals at a steady cadence of 70.5 rev/min. The chain engages with a front sprocket 15.2 cm in diameter and a rear sprocket 7.00 cm in diameter.

Apply a quadratic curve fit to your graph, which should be given by y = ax^{2} + bx + c If y represents the position of your object (in the x-direction, in this situation) and x represents time, what do the variables a, b, and c represent? (i.e. initial position, final position, change in…

On an air hockey table puck A (mass 0.25 kg) is moving towards puck B (0.35 kg). Puck B is initially at rest. The pucks collide elastically. After the collision, Puck A has a velocity of -0.12 m/s and puck B has a velocity of 0.65 m/s. What was the initial speed of Puck A before the…

A 2000 kg car moving north at 12 m/s collides head-onw ith a 1600 kg SUV moving south at 8 m/s. The road is very icy (assume no friction during collision). If the collision is inelastic, what is the new speed of the vehicles after the collision?

A 0.5 kg ball traveling 4 m/s to the right collides with a 1 kg ball traveling 5 m/s to the left. After the collision, the lighter ball is traveling 7 m/s to the left. What is the velocity of the heavier ball after the collision?

An 800 kg car traveling 5 m/s rear ends a stationary 1100 kg car. Assuming the ground friction is negligible during this inelastic collision, what is the velocity of the cars just after the collision?

a physics student who is renowned for his baseball pitching arm. In order to determine the amount of work he performs in throwing a baseball, Harold devises an experiment. He stands at the bottom of a deep pit and hurls a 0.146 kg baseball through an open third?floor window in a nearby…

A 2000 kg car moving north at 12 m/s collides head-onw ith a 1600 kg SUV moving south at 8 m/s. The road is very icy (assume no friction during collision). If the collision is inelastic, what is the new speed of the vehicles after the collision?

You bounce a ball with mass 0.5 kg horizontally against a brick wall. It hits the wall moving at 8 m/s, and then rebounds in the opposite direction at 6 m/s. What was the impulse on the ball?

The figure below shows the graph of force versus time for a baseball hit by a bat. (a) From this graph, determine the impulse (in N x S) given to the ball. (b) From this graph, determine the average force (in kN) exerted on the ball.

mass 2 = 2500kg whilst mass 3 = 7500kg

You are driving a car behind another car. Both cars are moving at speed 80 km/h. Assume your brakes are just a bit harder than the car ahead and your reaction time is 0.60 s. What minimum distance behind the car in front should you drive so that you do not crash into the car’s rear end if the…

Determine the refractive index of water at 25degree using sodium light

. Define each of the below components: • Breadboard: • LED: • Resistor:

You and your friend have decided to take advantage of a late winter snowfall by taking a toboggan out to the Sugar Bowl. Let’s assume that the combined mass of the toboggan and its riders is 130 kg and the slope is angled upwards at 20.0° above the horizontal. a) Find the magnitude of the…

I need help with chapter 1, conceptual questions 6 and 7.

What is a mole

Convert 70km to millimetre

A “rail gun” is shown in the figure below. A large current moves in a closed loop composed of fixed rails, a power supply, and a light, frictionless bar slides along the rails with perfect contacts. A 1.8 T magnetic field is perpendicular to the plane of the circuit. If the rails are a distance…

Consider releasing an upright coin from a smooth, frictionless surface. The coin has radius 0.01 m and falls sideways. Calculate the tangential velocity of the top of the coin just before the top of the coin hits the surface. You can treat the coin as a uniform disk.

Jupiter's moon Io has active volcanoes (in fact, it is the most volcanically active body in the solar system) that eject material as high as 500 km (or even higher) above the surface. Io has a mass of 8.93×10^22kg and a radius of 1821 km. What is the initial velocity?

a 500 n block is dragged along a horizontal surface by an applied force T at an angle 30 degree. the coefficient of kinetic friction is uk=.200 and the block moves at a Constant velocity. what is the magnitude of the applied force T in newtons

Which poisonous gas is evolved when white phosphorus is heated with Cone. NaOH solution? Write the chemical equation.

Nikolai is using a hand-operated grain mill to grind wheat berries into flour. The mill is operated by spinning a flywheel with radius R = 23 cm, which has a handle attached to the outer edge. After grinding for a few minutes at a constant angular speed ?i , he lets go of the handle and…

What is a photo diode ?

What is the velocity at time t= 2sec if initial velocity is 5m/s and acceleration is 2m/s2 . Assuming uniform acceleration

The figure below shows the drive train of a bicycle that has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long. The cyclist pedals at a steady cadence of 70.5 rev/min. The chain engages with a front sprocket 15.2 cm in diameter and a rear sprocket 7.00 cm in diameter.

Apply a quadratic curve fit to your graph, which should be given by y = ax^{2} + bx + c If y represents the position of your object (in the x-direction, in this situation) and x represents time, what do the variables a, b, and c represent? (i.e. initial position, final position, change in…

On an air hockey table puck A (mass 0.25 kg) is moving towards puck B (0.35 kg). Puck B is initially at rest. The pucks collide elastically. After the collision, Puck A has a velocity of -0.12 m/s and puck B has a velocity of 0.65 m/s. What was the initial speed of Puck A before the…

A 2000 kg car moving north at 12 m/s collides head-onw ith a 1600 kg SUV moving south at 8 m/s. The road is very icy (assume no friction during collision). If the collision is inelastic, what is the new speed of the vehicles after the collision?

A 0.5 kg ball traveling 4 m/s to the right collides with a 1 kg ball traveling 5 m/s to the left. After the collision, the lighter ball is traveling 7 m/s to the left. What is the velocity of the heavier ball after the collision?

An 800 kg car traveling 5 m/s rear ends a stationary 1100 kg car. Assuming the ground friction is negligible during this inelastic collision, what is the velocity of the cars just after the collision?

A 2000 kg car moving north at 12 m/s collides head-onw ith a 1600 kg SUV moving south at 8 m/s. The road is very icy (assume no friction during collision). If the collision is inelastic, what is the new speed of the vehicles after the collision?

You bounce a ball with mass 0.5 kg horizontally against a brick wall. It hits the wall moving at 8 m/s, and then rebounds in the opposite direction at 6 m/s. What was the impulse on the ball?