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A projectile is launched from ground level to the top of a cliff which is 195m away and 155 m high
If the projectile lands on top of the cliff 8.9s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance.
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
a motor applies a constant tension of 2.5 kN to a cable passing over a pulley, find the work done by gravitaional force action on the crate
Maria stands at the top of a 30 meter high cliff. She tosses a stone vertically up into the air, off the edge of the cliff, What is the stone's velocity when it hits the ground
A large bell is hung from a wooden beam so it can swing back and forth with negligible friction. What should be the length L of the clapper rod for the bell to ring silently-that is, for the period of oscillation for the bell to equal that for the ..
A 0.59-kg object connected to a light spring with a force constant of 24.0 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A battery provides a voltage of 10.0V and has unknown internal resistance Rint. If the external resistance is then changed to R2 = 7.00? , what is the value of the current I2 in the circuit
In a different car, the distance the dummy moves while being stopped is reduced from 0.750 m to 0.270 m, calculate the average force on the dummy as that car stops
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
Suppose a satellite is in a circular orbit 5.175 Earth radii above the surface of the Earth, By how much does it have to increase its speed
The left end of a long glass rod 7.00cm in diameter has a convex hemispherical surface 3.50cm in radius. The refractive index of the glass is 1.60. How far from the left end of the rod must the object be located to form the image
A 1400 kg car carrying four 92 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
A string under a tension of 58.5 N is used to whirl a rock in a horizontal circle of radius 2.75 m at a speed of 20.5 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
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