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A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and experience negligible air resistance. I know how to calculate the velocity before the ball hits the ground, but I don't know how to calculate the angle below the horizontal below which the ball hits the ground. Help?
From a vantage point very close to the track at a stock car race, you hear the sound emitted with a moving car. You detect a frequency that is 0.908 times as small as the frequency emitted with the car when it is stationary. The speed of sound is 343..
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, Calculate the probable percent error in the length
An automobile tire has a radius of 0.307 m, and its center moves forward with a linear speed of v = 18.3 m/s, Determine the angular speed of the wheel
describe in general terms how we may be able through some simple experiments determine the mass of the
What is the resistance of a light bulb that uses an averagepower of 90 W when connected to a 60Hz power source with a peak voltage of 170 V
A transformer is to be utilized to provide power for a computer disk drive that needs 6.0V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 400. Discover the number of turns in the secondary?
A person of mass m is standing at the edge of a large rotatingdisk. The disk is rotating without friction and has angular velocity ω, radiusR, and moment of inertia I. find what will be the change in angular velocity
The electric field everywhere on the surface of a thin, spherical shell of radius 0.795 m is of magnitude 852 N/C, What is the net charge within the sphere's surface
A 30 kg box is pushed by a horizontal force of 900. N as it slides up a plane inclined at an angle of 30 degrees with the horizontal. The coefficient of friction between box and plane is 0.20. How far-off will the box travel along the plane in 5.0..
An 80kg man falls our of a 1.5m tree starting at 0 speed. How much potential energy does he start with in the tree, Calculate the grounds force now converted to pounds
Water flows through a 4 cm diameter pipe at 4 m/s and with a gauge pressure of 2 atm. what will be the pressure in the narrower pipe
A simple pendulum uses a steel wire as the string. The length of this wire is 1.5 meter at room temperature. Obtain the change in period of the pendulum
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