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To move a large crate across a rough floor, you push on it with a force F at an angle of 21°, below the horizontal. Find the acceleration of the crate, given that the mass of the crate is m = 31 kg, the applied force is 321 N and the coefficient of kinetic friction between the crate and the floor is 0.63.
A 2.0 kg ball is thrown at the suspended 29.4 kg block with a velocity of 3.5 m/s. The coefficient of restitution between the ball and the block is e = 0.69. What is the maximum height h to which the block will swing? (mm)
The velocity of an airplane with respect to the ground is 2.00 x 102 m/s at an angle of 30.0 degrees NORTH of EAST. find the velocity of the air with respect to the ground
find the x and y components of each vector.
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
A centrifuge in a medical laboratory rotates at an angular speed of 3400 rev/min, Find the constant angular acceleration of the centrifuge
a football punter accelerates a football from rest to a speed of 10 m/s during the time in which his toe is in contact with the ball, what average force does the punter exert on the ball
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^2 + betaV^2, where alpha = 3.5 Pa/m^9 and beta = 8.2 Pa/m^6. What is the work done on the gas
What is the mass of the liquid in the vat.
A diver releases an air bubble of volume 2.9 cm3 from the depth of 18 m below the surface of a lake, where the temperature is 7.2°C. What is volume of the bubble when it reaches just below the surface of the lake, where the temperature is 22°C.
A disk of thickness 1 mm and radius equal to that of 1.5 Fresnel's zones is placed perpendicular to the line connecting the light source and detector. Evaluate the detected light intensity
a boat is traveling at 3.1rm ms in the same direction as an ocean wave of wavelength 30 rm m and speed 6.8 rm mrm s. if
Light with a wavelength of ? = 590 nm is incident on a diffraction grating. A screen is placed at a distance of L = 2.45 m from the grating. The grating has 180 lines per millimeter. What is the distance between the m = 4 maximum and the central.
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