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A 1200kg truck is accelerating uniformly from rest to 20.0m/s east while travelling 30.0m east across the level ground. The coefficient of friction between the tires and the road is 0.45.
A total of 3.04 106 electrons are placed on an initially uncharged wire of length 1.23 m. find the magnitude of the acceleration of a proton
question two capacitors are connected in parallel across the terminals of a battery. one has a capacitance of 2.0
Find the center of mass of a water molecule, referring to the figure below, with d = 0.096 nm and θ =104.5°. The mass of an oxygen atom is 16 u, and The mass of a hydrogen atom is 1 u, where u is the atomic mass unit. Use the center of the oxygen ato..
A hand pump is being used to inflate a bicycle tire that has a gauge pressure of 36.9 psi. how far down must the piston be pushed before air will flow into the tire
You are driving a car at the 25-mi/h speed limit when you observe the light at the intersection 68 m in front of you turn yellow. How fast were you going as you exited the intersection
A stationary motion detector sends sound waves of 0.7 MHztoward a truck approaching at a speed of 55.0 m/s. What is the frequency of the waves reflected back to the detector
A typical ten-pound car wheel has a moment of inertia of about0.35 \; \rm kg\cdot m^2. The wheel rotatesabout the axle at a constant angular speed making 70.0 fullrevolutions in a time interval of 7.00 s.
A point source emits sound waves with a power output of 120 W. At what distance will the decibel reading be 140 dB, which is noise level of a loud indoor rock concert
a 280 g block is dropped onto a relaxed vertical spring that has a spring constant of k 2.0 ncm. the block becomes
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
A bungee jumper has a mass of 68 kg. If he jumps off a bridge that is 200. m high and uses a bungee cord that is 75 m long with a spring constant of 20. N/m
every few hundred years most planets line up on the same side of the sun. calcute the total force on the Earth due to Venus, Jupiter, and Saturn, what fraction of the sun's force on the Earth is this
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