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A 90.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 38.0 deg with the horizontal. Find the magnitude of the applied force F. What is the magnitude of the normal force between the ramp and the box?
A surveyor starts at the southeast corner of a lot and charts the following displacements: A = 600 m, N; B = 400 m, W; C = 200 m, S; and D = 100 m, E. What is the net displacement from the starting point
Electric eels generate electric pulses along their skin that can be used to stun an enemy when they come into contact with it. What power is delivered to the unfortunate enemy
A circuit consists of two 475-k%u03A9 resistors in series with an ideal 12.0-V battery. Calculate the potential drop across one of the resistors
A 320 kg rocket sled can be accelerated at a constant rate from rest to 1400 km/h in 2.0 s. What is the magnitude of the necessary net force.
A rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380m/s. The bullet strikes a block of wood and penetrates to a depth of 14cm. What resistive force (assumed to be constant) does the wood exert on the bullet? How lo..
An atom is ionized so that it has only one electron. When the electron drops from the n = 3 shell to the n = 1 shell, an X-ray of wavelength 67.44 pm is emitted. What is the atomic number
The initial height of the ball is 60.0m and has a potential energy and initial pe of 1176.00, What was the maximum speed after it hit bottom
A 1830 kg car traveling at 12.9 m/s collides with a 2980 kg car that is initally at rest at a stoplight. find the coefficient of kinetic friction between the cars and the road
You are given three capacitors, with capacitances 0.0075 µF, 12000 pF, and 0.029 µF, what is the maximum and the minimum voltage difference would they make when charged to 130 µC
a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 211 m.
A person 1.6 m tall stands 4.9 m from a reflecting globe in a garden. How large is the person's image
The figures show a hypothetical planetary system at two different times. The spatial coordinates (x, y) of the bodies are given in Astronomical Units (AU). Find the magnitude, dS, of the star\'s displacement
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