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Sanna rolls a ball up to another person on a smooth ramp 19.6 m above her. The ball reaches the other person's hands when it is travelling 4.9 m/s uphill. If the ramp angle slows the ball down by 3.7 m/s each second it travels up the ramp, find the initial velocity of the ball.
What is an angular acceleration
A sound is set up in a pipe closed at one end and open atthe other. According to the formula given by Dr. Willis in class,when n=3 how much of a wavelength is in the pipe?
a ferris wheel with a radius of 14.0 m rotates at a constant rate completing one revolution in 30.0s. what is the
A resistor is connected to a battery with negligible internal resistance. by what factor does the power dissipated in the circuit change
The average intensity of sunlight reaching the earth is 1390 W / m2. A charge of 2.00 x 10^-8 C is placed in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
A motor running at 1500 revs/min has on its shaft three pulleys, of radii 6, 10 and 25 cm, respectively. Find the linear velocity of the outside rim of each pulley
A 24-V battery is attached to a 100-ohm resistor and a 3.0-mF capacitor. If the capacitor is initially uncharged, how long will it take for the capacitor to reach a charge of 50 mC?
assuming the diameter of a penny is 2.00 cm and its mass is 2.60g what is the minimum air speed needed to lift the
An RCL circuit connected in series has R=180 ohms, C=1/280 farad, L=20 henries, and an applied voltage E(t)=10sin(t). find the subsequent charge on the capacitor
two point charges -10nc and 16nc are held fixed a distance 0.55m apart. assume that both charges lie on x-axis for the
A parallel-plate air capacitor of area 15 cm2 and plate separation 2 millimeter is charged by a battery to a voltage 60.0 V. find how much additional charge will flow from battery onto the positive plate
After driving for several hours, the temperature in the tire reaches 120 degrees Fahrenheit.
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