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Your spaceship lands on an unknown planet. You drop a 1.50 kg wrench from 5.50 m above the ground and measure that it hits the ground 0.811 s later. You also do enough surveying to determine that the circumference of the planet is 6.00 x 10^4 km.
Part A: What is the mass of the planet, in kilograms?
Part B: Express the planet%u2019s mass in terms of the earth%u2019s mass.
40K is a naturally occurring rare isotope of potassium responsible for some of our exposure to background radiation. Find the radius of a 40K nucleus
What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her
A plastic rod is rubbed with a cloth, and in the process it acquires a charge of ?2.1×10E?8C. How much does the mass of the rod increase by
Suppose a car is traveling at +16.8 m/s, and the driver sees a traffic light turn red. After 0.569 s has elapsed, calculate the stopping distance of the car
A 0.80kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.1m on a frictionless horizontal surface. what is the maximum speed the ball can have
A 3 m long rigid beam with a mass of 115 kg is supported at each end. An 60 kg student stands 2 m from support 1. How much upward force does each support exert on the beam.
If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol, Determine the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 19.5 A current
An air-filled toroidal solenoid has a mean radius of 15.0 and a cross-sectional area of 5.02, What is the least number of turns that the winding must have
You do 6.5 J of work to stretch a spring with k = 190 N/m , starting with the spring unstretched. How far does the spring stretch
Two packing crates of massesm1= 10.0kg and m2=7.00 are connected by a light string that passes over a frictionless pulley, Find the acceleration of the 7.00 kg crate
The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 1.50 m/s, how much work is done by the (non-conservative) force of the wave
A mass m = 4.5 kg hangs on the end of a massless rope L = 2.01 m long. The pendulum is held horizontal and released from rest. What is the magnitude of the tension in the string at the bottom of the path
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