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Question: You attach a rope to a 50 kg crate and use it to drag the crate across the floor. At the point where the rope is attached to the crate it makes an angle of 40 degrees above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.6, and the maximum tension that the rope can have without breaking is 400 N. Is it possible to drag the crate with a horizontal acceleration of 5 m/s2 without breaking the rope?
A beam having a flux of 10^10 particles per second per cm^2 is incident on a target. The differential cross section is d(sigma)/d(omega) = (b^2)(sin(theta))^2. What is the total cross section
A constant horizontal force moves a 50 kg trunk 7.0 m up a 26° incline at constant speed, What is the increase in the thermal energy of the trunk and incline
A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39x109 m, and its mean distance from the earth is 1.50x1011 m. The camper is using a converging lens whose focal length is 10.1cm.
A sports car starts from rest on a circular track of radius 537 meter. The car's speed increases at the constant rate of 0.780 m/s2. Calculate the speed of the sports car
A contact lens is made of plastic with an index of refraction of 1.50. The lens has an outer radius of curvature of +2.0cm and an inner radius of curvature of +2.5cm. What are the focal length and the power of the lens?
Coil springs are widely used in industry. Those used in scientific instruments must be manufactured to exhibit consistent performance. Calculate the force constant k
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
A cannonball is fired at an angle of 38.0 degrees above the horizontal with an initial speed of 58.0 m/s. Neglect air resistance. What is the magnitude of the horizontal component of the cannonball's displacement at the end of 2s
a 60-w light bulb emits spherical electromagnetic waves uniformly in all directions. if 50 of the power input to such a
The dimensions of the picture on a 35.0 mm color slide are x = 24.0mm x y= 36.0. What are the dimensions of the image on the screen
At a certain distance from a charged particle, the magnitude of the electric field is 502 V/m and the electric potential is -3.40 kV. What is the distance to the particle
Two pints A and B on the surface of the earth are at the similar longitude and 60o apart in latitude assume that an earth quake at point A creates a P wave that reaches point B by traveling straight during the body of the earth at constant speed of 7..
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