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A street light is supported by two wires and each makes a different angle from each other. The one on the left is 32 degrees and the one on the right is 43 degrees. Find the tension in each wire if the street light has a mass of 60.0 kg.
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal?
In order to estimate the properties of a uniform magnetic field, you shoot an alpha particle into the field. Determine the magnitude of the particle
a 28Kg rock approaches the foot of a hill with a speed of 15 m/s.This hill slopes upward at a constant angle of 40degrees above the horizontal. use energy conservation to find the maximum height the rock will reach
An object weighs 302 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 220 N. When it is immersed in oil, it weighs 257 N. what is the density of the object.
Two astronauts are at rest in outer space, one 19.7 m from the Space Shuttle and the other 39.4 m from the Shuttle. Using a 129.0-W laser, how long will it take her to reach the Space Shuttle
A commuter train passes a passenger platform at a constantspeed of 45.0 m/s. What wavelength is detected by a person on the platform as thetrain approaches
A pinhole camera is made from an 85cm -long box with a small hole in one end. If the hole is 5.4m from a 1.7m -tall person, how tall will the image of the person on the film be?
In the example a sharp metallic tip is held just above a conducting surface with a voltage between the tip and the surface with a current flowing. How would the current vary with the separation between tip and sample (just the functional variation..
A circular coil 15 centimeter in diameter and containing nine loops lies flat on the ground. evaluate the torque on the coil
a car travels around a curve at a constant speed of 83.0 kmh. what is the cars instantaneous velocity at an instant
a car traveling 85km/h strikes a tree. the front end of the car compresses and the driver come to rest after traveling 0.80m
You shoot a 47-g pebble straight up with a catapult whose spring constant is 310 N/m. How high above the starting point does the pebble fly
Consider a proton to be a uniformly charged sphere 1 fm in radius. Find the electric energy density at the proton's surface
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