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A 2.05-kg block is on a plane at 19 degrees with respect to the horizontal. The coefficent of static friction between the block and the plan is 0.80.
A. How many forces are acting on the block?
B. What is the normal force?
C. Is the block moving? Explain.
The sun's mass is 1.99 x 10^30 kg, the earth's mass is 5.98 x 10^24 kg, and the moon's mass is 7.36 x 10^22 kg. The average distance between the moon and the earth is 3.82 x 10^8 m, and the average distance between the earth and the sun is 1.50 x ..
200 g of lead (c=128 j/kg*K) at 100 degree (=100 C) are placed in a container filled with 200g of water (c=4190 j/kg*K) at 20 degree (= 20 C). How much Heat is exchanged with the environment
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 2.6 x 10-7 C/m2, the plates are separated by a distance of 1.4 x 10-2 m. How fast is the electron moving just before..
A 21g particle is moving to the left at 29 m/s. How much work must be done on the particle to cause it to move to the right at 41 m/s.
Find the group velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV electrons
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. What is the electric field near the surface of the ball
Suppose an asteroid is found that appears to be heading directly toward Earth (using Earth's location at the time of discovery). It is 4.2 A.U. away (i.e., 4.2 times the Earth-Sun distance), and travelling through the Solar System with a speed of ..
A 1600 kg car is traveling along a straight road at 17 m/s. Two seconds later its speed is 24m/s. What is the magnitude of the net force on car during this time.
A nonreflective coating (n = 1.35) covers the glass (n = 1.52) of a camera lens. determine the minimum nonzero thickness that the coating can have
Radius of rotation of the hanging mass in apparatus in lab M20a is set to 10.0 cm. Determine the centripetal force and suspended mass
Richard is driving home to visit his parents. 140 of the trip are on the interstate highway where the speed limit is 65. How many minutes does he save
person leaning over a 124 m deep well accidentally drops a siren emitting sound of frequency 2430 hz. What beat frequency does this person perceive
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