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the moon has an angular size of .5degrees when viewed with unaided vision from earth. what is the angular size of the moon as seen through this telescope
Two, concentric, thin spherical shells of radii R1 = 31.3 cm and R2 = 39.1 cm are uniformly charged with a total charge Q1 = -56.5 ?C, What is the potential of the outer shell
A cannon fires a cannon ball at 853.59 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
A vertical solid steel post of diameter d = 24cm and length L = 2.10m is required to support a load of mass m = 8200kg. What is the strain in the post
A battery with an emf of 12.0 V shows a terminal voltage of 11.8 V when operating a circuit with four light bulbs each rated at 4 W (at 12.0 V) which are connected in parallel. What is the current i
A football is punted straight up into the air; it hits the ground 5.2 s later. With what speed did it leave the kicker's foot
Neutron stars are so named because they are composed of neutrons and have a density the same as that of a nucleus. find the radius of a neutron star
A step-down transformer produces a voltage of 6.0V across the secondary coil when the voltage across the primary coil is 140V, What voltage appears across the primary coil of this transformer
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.
You throw a stone upward from the top of a building at an angle of 25° to the horizontal, How far from the base of the building does the stone land
Three masses are placed at different points along a meter stick of negligible mass: 0.09 kg at 0.98 m, 0.04 kg at 0.55 m, Where's the center of mass of the system
A circuit consists of a 0.15 microF capacitor, a 600 ohm resistor, and a 70 mH inductor in series. Calculate the rms current flow
a 0.40kg basketball is thrown horizontally against a board with a velocity of 20m/sec. If the ball rebounds with a speed of 15m/sec. What is the impulse of the ball
You see lightning strike a mountaintop, and 2.98 s later you hear the accompanying thunder. How far away is the mountaintop
Recent measurements show that the black hole at the center of the Milky Way galaxy, which is believed to coincide with the powerful radio source Sagittarius A*, What is the maximum radius of this bl
While a hybrid car brakes to come to a stop at a traffic light, describe the energy transfer and materials used to transfer of this energy
In a TV picture, faint, slightly offset ghost images are formed when the signal from the transmitter travels to the receiver both directly, what is the difference in the distance traveled by the two
A 3.85 kg mass attached to a spring oscillates with a period of 0.355 s and an amplitude of 20.5 cm. find the maximum speed of the mass
You are working on the analysis of rocks brought back from the Moon, What is the density of the rock
The muon is an unstable particle, with a mean lifetime of 2.5x10^-10 seconds. What is the minimum uncertainty in this particle's energy
A fisherman wants to know the mass of a trout he just caught but does not have scales. What is the mass of the fish
If the scattered photon has a wavelength of 0.320nm , what is the wavelength of the incident photon, Find the kinetic energy of the recoil electron
An X-ray photon with a wavelength of 0.260 nm scatters from a free electron at rest. Find the final momentum of the photon
The rear axle of a truck is 2.5 m long. If the truck is moving at 28 m/s, what emf is induced between the ends of the axle
A square loop has sides 12 cm long and is wound with 50 turns of wire carrying 250 mA of current. what torque does the loop experience