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A tennis player swings her 1000 g racket with a speed of 12 m/s. She hits a 60 g tennis ball that was approaching her at a speed of 24 m/s. The ball rebounds at 36 m/s.
a) How fast is her racket moving immediately after the impact? You can ignore the interaction of the racket with her hand for the brief duration of the collision.
b) If the tennis ball and racket are in contact for 10 ms, what is the average force that the racket exerts on the ball?
A uniform round tube of diameter 6.32 cm has two piston tops which are balanced at exactly the same height due to a mass (m) on the left side, What mass (m) is required to balanced the system
A vertical straight wire carrying an upward26-A current exerts an attractive force per unit length of 7.3×10?4N/m, What is the direction of the current in the second wire?
A luge and its rider, with a total mass of 83kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 44m/s. Assume that they stop with the constant deceleration of 2.9 m/s2.
Two charged particles, Q1 = +4.90 nC and Q2 = -2.80 nC, are separated by 36.0 cm. What is the electrical potential energy of the pair
An electron is placed between two parallel plates that are separated by 2.2 cm and have a potential difference of 1000 V between them. What is the acceleration of the electron
The position of an object connected to a spring varies with time according to the expression x = (5.4 cm) sin(9.3?t). Find the frequency of the motion
a kereru new zealand wood pigeon travelling at 1.5 m/s due west has an elastic collision with an airbus a380 aeroplane. with what speed is the kereru travelling after the collision?
Determine the distribution of charge which is responsible for creating this electric field. Hint: consider a Gaussian surface which is a cylinder of radius R
question1a traffic light weighing 1.20 x 102 n hangs from a vertical cable tied to two other cables that are fastened
a 100 kg wrecking ball savings on a 15.0 m long cable. if is swings from rest 4.0 m above the lowest piont, what is the tension in the cable at the lowest point
The masses of astronauts are monitored during long stays in orbit, such as when visiting a space station. What is the mass of an astronaut who has an oscillation period of 2.00 s when in the chair
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. find the index of refraction of the reflecting material
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