Afast pitch softball player does a "windmill" pitch, moving her hand through a vertical circular arc to pitch a ball at 65 mph. the 0.19 kg ball is 50 cm from the pivot point at her shoulder.
- just before the ball leaves her hand, what is its centripetal acceleration?
- at the lowest point of the circle the ball has reached its maximum speed. what is the magnitude of the force her hand exerts on the ball at this point?
- at the lowest point of the circle the ball has reached its maximum speed. what is the direction of the force her hand exerts on the ball at this point?
Answers: 2
Physics, 22.06.2019 03:30
What is the momentum of a 2 kg object moving at 15 meters per second
Answers: 1
Physics, 22.06.2019 10:30
Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?
Answers: 1
Physics, 22.06.2019 20:20
An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states
Answers: 1
Physics, 22.06.2019 23:30
The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?
Answers: 2
Afast pitch softball player does a "windmill" pitch, moving her hand through a vertical circular arc...
History, 11.12.2020 01:50
English, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50
History, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50
History, 11.12.2020 01:50
English, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50
Mathematics, 11.12.2020 01:50