Physics, 16.01.2020 21:31 dontcareanyonemo

Abaseball pitcher, loosening up his arm before a game, tosses a 0.15-kg ball using only the rotation of his forearm, 0.32 m in length, to accelerate the ball. if the ball starts at rest and is released with a speed of 12 m/s in a time of 0.40 s, what is the average angular acceleration of the arm and ball?

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 07:00, Angelanova69134

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

Answers: 1

continue

Physics, 22.06.2019 11:30, julie47d

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Answers: 1

continue

Physics, 22.06.2019 16:00, cmir

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

Answers: 2

continue

Physics, 22.06.2019 18:50, jtsizemore

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?

Answers: 2

continue

You know the right answer?

Abaseball pitcher, loosening up his arm before a game, tosses a 0.15-kg ball using only the rotation...