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1) The slope of the illustrated plane is increased until, at θ = 26o the penguin is just on the verge of sliding. What is the coefficient of static friction between the penguin and the plane?
2) A child on a swing is pulled back by Daddy and released from rest at a height of 0.93 m above the swing's lowest point. Find the child's speed as the swing passes through its lowest point.
3) Two hockey pucks of equal mass approach each other head-on with equal speeds of 8.4 m/s. They collide and one puck leaves the collision with a speed of 6.4 m/s. What is the speed of the other puck after the collision?
A charged particle is moving horizontally westward with a velocity of 3.5 x 10^6 m/s in a region, What is the charge on the particle
In a 261-turn automobile alternator, the magnetic flux in each turn is ?B = (2.62E-4 T*m2) cos(?t), determine the maximum emf in the alternator
one mole of hydrogen one mole of nitrogen and one mole if oxygen are held in a 22.4*10^3 cm^3 enclosed vessel at 20C find the pressure in vessel
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long. Suppose an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. Decide the rotation r..
A 10000 kg boxcar traveling at 16 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.0 m/s. What is the mass of the second car
What is size of the gravitational force on the moon
A day-care worker pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a spinning rate of 20.4 rpm in 11.0 s. Calculate the torque required to produce the acceleration
A 57.0-m length of coaxial cable has an inner conductor that has a diameter of 2.58 mm and carries a charge of 8.10 µC. obtain the potential difference between the two conductors
a heavy piece of machinery is raised by sliding it a distance d = 14.9 m along a plank oriented at angle ? = 25.7° to the horizontal. How high above its original position is it raised
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
On a highly polished, essentially frictionless lunch counter, How much mechanical energy dissipates in the collision
When a light ray passes from a material of higher n to a material of lower n (for instance, a light ray passing from glass to air), What is the critical angle for wate
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