Homework Answers
1. A ping pong ball (ball #1, mass of 2g) is held just above a tennis...
1. A ping pong ball (ball #1, mass of 2g) is held just above a tennis ball (ball #2, mass of 57g) with their centers vertically aligned. When the balls are released, they fall through a vertical distance of 1.27 meters. a) Prove that each ball is traveling at 5.00 m/s just before it hits the ground. The tennis ball (#2) hits the ground and bounces elastically off of it before the ping pong ball (#1) actually hits #2. Since...
Pleass help 3. A ping-pong ball is a hollow sphere that has a radius of 0.100...
Pleass help
3. A ping-pong ball is a hollow sphere that has a radius of 0.100 m and a mass of 0.00270 grams. At one point during a game of table tennis the ball is initially rotating at 100 rad/s counterclockwise (around its center of mass) before being hit by a paddle. The hit from the paddle changes the angular velocity to 60 rad/s clockwise in a time of 0.200 seconds. (a) Through how many radians will the ball turn...
2. Problem #37 from Chapter 10 3. A ping-pong ball is a hollow sphere that has...
2. Problem #37 from Chapter 10 3. A ping-pong ball is a hollow sphere that has a radius of 0.100 m and a mass of 0.00270 grams. At one point during a game of table tennis the ball is initially rotating at 100 rad/s counterclockwise (around its center of mass) before being hit by a paddle. The hit from the paddle changes the angular velocity to 60 rad/s clockwise in a time of 0.200 seconds. (a) Through how many radians...
A small plastic ball (similar to a ping-pong ball) with mass 6 g is attached by...
A small plastic ball (similar to a ping-pong ball) with mass 6 g is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally sub- merged, the tension in the thread is 0.028 N. The density of water is 1000 kg/mº and the acceleration of gravity is 9.81 m/s. 68 Determine the diameter of the ball. Answer in units of cm.
Relativistic ping-pong In the lectures, we determined the paddle velocity (relative to earth) such that a...
Relativistic ping-pong In the lectures, we determined the paddle velocity (relative to earth) such that a ball travelling at 10m/s in the earth frame, would leave the paddle at 15 m/s in the earth frame. To solve this problem it was useful to use the paddle-fixed frame. With a heavy (compared to ball) paddle, we could neglect the influence of the ball on the motion of the paddle. Repeat this type of calculation for relativistic speeds using relativistic velocity addition:...
A ball is thrown towards a wall with an initial speed of 25.0 m/s, starting at...
A ball is thrown towards a wall with an initial speed of 25.0
m/s, starting at 8.20 m above the ground. The height of the wall is
10.0 m and it is located 20.0 m from the launch point of the ball.
You may assume projectile motion for the ball. (SEE DIAGRAM IN
PICTURE BELOW)
a) When the ball passes directly above the wall, how high above
the wall is it? What is the velocity of the ball
when it...
A ball of mass m moving with velocity v_i_vec strikes a vertical wall. The angle between the ball's initial velocity ve...
A ball of mass m moving with velocity v_i_vec strikes a vertical
wall. The angle between the ball's initial velocity vector and the
wall is theta_i as shown on the diagram, which depicts the
situation as seen from above. The duration of the collision between
the ball and the wall is Deltat, and this collision is completely
elastic. Friction is negligible, so the ball does not start
spinning. In this idealized collision, the force exerted on the
ball by the...
Bob drops a ping pong ball (m = 0.01 kg) and Mike at the same time...
Bob drops a ping pong ball (m = 0.01 kg) and Mike at the same time and at the same height drops a bowling ball (m = 12 kg), which ball hits the ground first if both are considered in free fall? Ping pong ball They both hit at the same time Bowling ball No answer text provided. Question 13 1 pts Cathy drops a ball, if we approximate the acceleration due to gravity to be g = 10 m/s/s,...
A Ball Hits a Wall Elastically Part A A ball of mass m moving with velocity...
A Ball Hits a Wall Elastically Part A A ball of mass m moving with velocity strikes a vertical wall as shown in (Figure 1). The angle between the ball's initial velocity vector and the wall is 0, as shown on the diagram, which depicts the situation as seen from above. The duration of the collision between the ball and the wall is Δ, and this collision is completely elastic. Friction is negligible, so the ball does not start spinning...
2. (8 marks) Air A popular science demonstration is to levitate a ping pong ball with...
2. (8 marks) Air A popular science demonstration is to levitate a ping pong ball with an air jet, because if you push the ball off to the side, the ball will always return to the centre. (a) 2 marks. Briefly explain this phenomenon using the Bernoulli equation. (b) 6 marks. Estimate the velocity of the air if the ball has a mass of 2.5 g and a diameter of 3.8 cm.
1. A ping pong ball (ball #1, mass of 2g) is held just above a tennis ball (ball #2, mass of 57g) with their centers vertically aligned. When the balls are released, they fall through a vertical distance of 1.27 meters. a) Prove that each ball is traveling at 5.00 m/s just before it hits the ground. The tennis ball (#2) hits the ground and bounces elastically off of it before the ping pong ball (#1) actually hits #2. Since...
Pleass help
3. A ping-pong ball is a hollow sphere that has a radius of 0.100 m and a mass of 0.00270 grams. At one point during a game of table tennis the ball is initially rotating at 100 rad/s counterclockwise (around its center of mass) before being hit by a paddle. The hit from the paddle changes the angular velocity to 60 rad/s clockwise in a time of 0.200 seconds. (a) Through how many radians will the ball turn...
2. Problem #37 from Chapter 10 3. A ping-pong ball is a hollow sphere that has a radius of 0.100 m and a mass of 0.00270 grams. At one point during a game of table tennis the ball is initially rotating at 100 rad/s counterclockwise (around its center of mass) before being hit by a paddle. The hit from the paddle changes the angular velocity to 60 rad/s clockwise in a time of 0.200 seconds. (a) Through how many radians...
A small plastic ball (similar to a ping-pong ball) with mass 6 g is attached by a thread to the bottom of a beaker. When the beaker is filled with water so that the ball is totally sub- merged, the tension in the thread is 0.028 N. The density of water is 1000 kg/mº and the acceleration of gravity is 9.81 m/s. 68 Determine the diameter of the ball. Answer in units of cm.
Relativistic ping-pong In the lectures, we determined the paddle velocity (relative to earth) such that a ball travelling at 10m/s in the earth frame, would leave the paddle at 15 m/s in the earth frame. To solve this problem it was useful to use the paddle-fixed frame. With a heavy (compared to ball) paddle, we could neglect the influence of the ball on the motion of the paddle. Repeat this type of calculation for relativistic speeds using relativistic velocity addition:...
A ball is thrown towards a wall with an initial speed of 25.0
m/s, starting at 8.20 m above the ground. The height of the wall is
10.0 m and it is located 20.0 m from the launch point of the ball.
You may assume projectile motion for the ball. (SEE DIAGRAM IN
PICTURE BELOW)
a) When the ball passes directly above the wall, how high above
the wall is it? What is the velocity of the ball
when it...
A ball of mass m moving with velocity v_i_vec strikes a vertical
wall. The angle between the ball's initial velocity vector and the
wall is theta_i as shown on the diagram, which depicts the
situation as seen from above. The duration of the collision between
the ball and the wall is Deltat, and this collision is completely
elastic. Friction is negligible, so the ball does not start
spinning. In this idealized collision, the force exerted on the
ball by the...
Bob drops a ping pong ball (m = 0.01 kg) and Mike at the same time and at the same height drops a bowling ball (m = 12 kg), which ball hits the ground first if both are considered in free fall? Ping pong ball They both hit at the same time Bowling ball No answer text provided. Question 13 1 pts Cathy drops a ball, if we approximate the acceleration due to gravity to be g = 10 m/s/s,...
A Ball Hits a Wall Elastically Part A A ball of mass m moving with velocity strikes a vertical wall as shown in (Figure 1). The angle between the ball's initial velocity vector and the wall is 0, as shown on the diagram, which depicts the situation as seen from above. The duration of the collision between the ball and the wall is Δ, and this collision is completely elastic. Friction is negligible, so the ball does not start spinning...
2. (8 marks) Air A popular science demonstration is to levitate a ping pong ball with an air jet, because if you push the ball off to the side, the ball will always return to the centre. (a) 2 marks. Briefly explain this phenomenon using the Bernoulli equation. (b) 6 marks. Estimate the velocity of the air if the ball has a mass of 2.5 g and a diameter of 3.8 cm.
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