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Question: A ball is thrown vertically upward, which is the positive direction. A little later it returns to its point of release. The ball is in the air for a total time of 8.16 s.
Question 1: What is its initial velocity?
Pleases show all work and steps to find its initial velocity. Neglect air resistance.
A standing wave interference pattern is set up by radio waves among two metal sheets 6.20 m apart. This is the shortest distance among the plates that will produce a standing wave pattern. What is the fundamental frequency?
A piano string is so badly out of tune that the tension must be increased by 10%. Find the percentage increase of the frequency
A gas is compressed at a constant pressure of 0.800 atm from 12.00 L to 3.00 L. In the process, 380 J of energy leaves the gas by heat. (a) What is the work done on the gas? J (b) What is the change in its internal energy?
A force of 21.0 N is required to start a 2.8 kg box moving across a horizontal concrete floor. What is the coefficient of static friction between the box and the floor
Before starting this problem, review Conceptual. The force vector A has the magnitude of 75.0 newtons (N) and points due east. The force vector B has a magnitude of 101 N and points 72.9 ° north of east.
A 79 kg pole-vaulter falls from rest from a height of 4.6 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.30 s after landing on the pad. compute the athlete's velocity just before reaching the pad.
what is the magnitude of the average acceleration of a skier who starting from rest reaches a speed of 7.9 ms when
How high a tree would a 79.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
The ultracentrifuge is an important tool for separating and analyzing proteins in biological research. If the samples are 11 cm from the axis if the rotor and the ultracentrifuge spins at 6.5×10^4 rpm, what is the magnitude of the net force on the ..
A 4700 μF capacitor is charged to a 9 Volt battery and then connected across a 1.50 H inductor. Evaluate what is the maximum current
A 115kg mail bag hangs by a vertical rope 3.5m long. Find the force needed to hold the bag in its new position
An automobile emits 20 lbs of CO2 per gallon of gasoline burned. how many billions of lbs of CO2 are emitted every year
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