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A block is launched up a frictionless ramp that makes an angle of 35 degree to the horizontal. If the block's initial speed is 2.2 m/s, determine how far up the ramp does it slide (hint: use inclined plane downhill acceleration and equations of kinematics).
The temperature of the surface of the sun is 6000K and its radius is 696,000Km. How much energy is the sun radiating into space per second
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
A large electromagnet coil is connected to a 121 Hz ac source. The coil has a resistance 410 ohms , and at this source frequency the coil has an inductive reactance 260 ohms. What must the rms voltage of the source be
If the gas in a container absorbs 293 J of heat, has 106 J of work completed on it and after that does 35 J of work, what is the enhancement in the internal energy of the gas.
Force on a Particle A force F = (4.0 N)i + (c N)j acts on a particle as the particle goes through displacement d = (4.0 m)i - (2.0 m)j. (Other forces also act on the particle.) What is the value of c if the work done on the particle by force F is eac..
a soccer player kicks a rock horizontally off a 41.3 m high cliff into a pool of water. if the player hears the sound
if a second capacitor of capacitance 2c is connected in series to the first the time constant of the new rc circuit
two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the following wave
In a certain region, the earth's magnetic field has a magnitude of 4.7 x 10-5 T and is directed north at an angle of 42° below the horizontal. Determine the bullet's electric charge
A hydrogen atom is in the n = 22 state. Use the Bohr model of the hydrogen atom, find the potential energy of the atom
You are trying to shoot supplies from the ground so that they reach the top of a plane while flying low. The plane is flying at an altitude of y=20 meters high and with a speed of 30m/s, and you want to project your medical supplies with an initia..
An electron microscope is designed to resolve objects as small as 0.32 nm. What energy electrons must be used in this instrument
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