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The length of a beam increases by 1.35mm when its temperature is raised from 37.83oC to 96.34 oC. What is the length of the beam at the initial temperature? The thermal expansion coefficient of the material is 0.00005 /oC.
As a freely falling object picks up downward speed, what happens to the power supplied by the gravitational force? Does it increase, decrease, or stay the same and Why.
A bicycle wheel of radius 0.30m is spinning at a rate of 60 revolutions per minuit. What is the period of the wheels motion
block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.2 m and then collides with stationary block 2, What is the value of distance d if the collision is elastic
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. If the outer radius is 1.39 cm, how fast does the hanging mass rise
On a humid day, an electric field of 2.00 * 10^4 N/C is enough to produce sparks about an inch long. Suppose that in your physics class, use Coulomb's law to calculate the electric field at the surface of the sphere
A rocket of total mass 3180-kg is travelling in outer space with a velocity of 115 m/s toward the Sun.
What is the half-life in days of a radioactive sample with 5.2×1015 atoms and an activity of 5.1×108Bq ? What is the half life in days
To make a bounce pass, a player throws a 0.60-kgbasketball toward the floor. find the magnitude of the impulse delivered to it by the floor
An 80 kg weightlifter is standing holding a bar weighing 981 N directly over his head. What is the GRF (ground reaction force) acting on the weightlifter's feet
State the direction as an angle with respect to the +x axis.
A javelin is thrown at an initial speed of 28.5 m/s at an initial height of 1.93 m above the ground, Find this maximum range
Unpolarized light is incident on a system of three polarizers. The second polarizer is oriented at an angle of 30 degrees with repect to the first, what is the intensity of the incident light
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