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A vibrating source generates a harmonic wave on a string underconstant tension. If the power delivered to the string is doubled, by what factor does the speed change?
a block of mass 21.1 kg supported by a vertical massless cable is initially at rest. the block is then pulled upward
a steel rod 2.00 m long is to be used to pry up one end of a 400-kg crate. if a workman can exert a downward force of
Find the Inertia Tensor for a uniform, thin hollow cone, such as an ice-cream cone, of mass M, height h, and base radius R, spinning around its pointed end
A conducting wire formed in the shape of a right triangle with base b = 38 cm and height h = 63 cm, What is the angular frequency of rotation
A patient walks across a force platform and the forces exerted by the patients foot during a step is recorded. What is the direction of the resultant force
A monatomic ideal gas is heated while at a constant volume of 1x10^-3 m^3, using a 10 watt heater. How long was the heater on
question a crate is sliding down an inclined plane. the coefficient of kinetic friction between the crate and the plane
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.10 x 10^3 J. By how much does the potential energy of a(n) 20 kg child increase when the child climbs a norma..
A projectile is launched on an unnamed planet. The projectiles vertical position is y(t)= -5t^2 + 15t +50, find the vertical velocity of the projectile launched
A golfer lines up for her first putt at a hole that is 10.5 m exactly north west of her ball's location. She hits the ball 10.5 m and straight, but at the wrong angle, 41 degrees from due north.
The critical angle for light traveling in a particular optical medium and incident on an interface with air is 46.7o. Calculate the refractive index of this medium
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