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The Moon is 3476 km in diameter and orbits the Earth at an average distance of 384,400 km.
What is the angular size in radians of the Moon as seen from Earth?
A penny is 19 mm in diameter. How far from your eye should the penny be held to produce the same angular diameter as the Moon?
A race car starting from rest accelerates at a constant rate of 6.50 m/s2. What is the velocity of the car
A uniform ladder of length L and weight w is leaning against a vertical wall. determine the smallest angle the ladder can make with the floor without slipping
What is the percentage difference between the speeds of red light and violet light in diamond, What is this percentage difference in flint glass
Helium forms a solid at low temperatures and high pressures. To maintain the order present in a solid, each atom must remain at its assigned position, Find the uncertainty in momentum of the helium atom
A child sits still on a swing that is supported by two chains. Each chain makes a 15.0° angle with the vertical. The child's mass is 25.0 kg. What is the tension in each chain? (Ignore the mass of the seat and chains.)
A certain type of laser emits light that has a frequency of 5.2 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.7 x 10-11 s. How many wavelengths are there in one pulse.
Light is shining perpendicularly on the surface of the earth with an intensity of 680 W/m2. find the number of photons per second per square meter
A unifrom rod of length L = 2.00 and mass m = 1.10 kg is attached to a frictionless pivot through one of its ends. Find the linear speed of the tip of the rodas it passes through the vertical
a werewoflf vaulting over a fence is spotted by some hunters. The hunters shoot a specially molded silver bullet and hit the creature in the shouldr. find the angular velocity of the werewolf after the collison
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Determine the length of the lake
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. What is the peak value of the magnetic field at the detector due to the wave
The diameter of the He atom is approximately 0.10nm. Compute the density of the He atom in (assuming that it is a sphere).
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