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A ball is dropped from an upper floor, some unknown distance above your apartment. As you look out of your window, which is 1.3 m tall, you observe that it takes the ball 0.18 s to traverse the length of the window. Determine how high above the top of your window the ball was dropped. Ignore the effects of air resistance.
A 9.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point between the two masses 19.0 cm from the 9.00 kg mass along the line connecting the two fixed masses.
If the x- and y- components of a vector of 6.0 m at 45 degrees are tripled what is the magnitude of a new vector and what is the direction
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.2 s, illustrate what is the average force exerted on the ball by the wall
Determine how fast would a car have to round a turn with a radius of 60 meter for its acceleration to be numerically equal to that of gravity
What is the mass of the mud sitting above a 3.7 m2 area of the valley floor - During heavy rain, a section of a mountainside measuring.
A long solenoid has 130 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.80 cm perpendicular to the solenoid axis. Find the current i in the solenoid
A 1.05 g samara (the winged fruit of a maple tree), falls toward the ground with a constant speed of 1.1 m/s. what is the force of the air resistance exerted on the samara?
Calculate the change in length (ΔL) of the tube. Remember that a negative change in length means that the length decreases, and a positive change in length means that the length increases.
A mass and spring are arranged on a horizontal, The spring constant is k = 570 N/m, and the mass is 5 kg. Find the velocity of the mass when it leaves the spring
A typical human body has surface area 1.4 m2 and skin temperature 33 C. If the body's emissivity is about 0.90, what's the net radiation from the body when the ambient temperature is 11C? Express your answer with the appropriate units.
A 2400 kg car moving at an initial speed of 20 m/s along a horizontal road skids to a stop in 66 m.
When an ambulance is stationary, the siren gives off a sound at a frequency of 500Hz. What is the frequency of the stationary siren
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