How much friction is acting on the crate
Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on the crate?
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A boy runs 14.1 blocks north, 13.3 blocks northeast, and 15.3 blocks west. Determine the length of the displacement vector that goes from the starting point to his final position.
An 8.00-kg point mass and a 14.0-kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point between the two masses 12.0 cm from the 8.00-kg mass along the line connecting the two fixed masses. Find the
An unstable high-energy particle is created in the laboratory, and it moves at a speed of 0.976c. What is the distance measured by a hypothetical person traveling with the particle?
A 2.60 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.190 s, what is the average force exerted on the bal
Two metal rods-one copper, the other lead-are connected in parallel with a temperature of 21° C at one end and 106° C at the other end. Both rods are 0.688 m in length, and the lead rod is 2.88 cm in diameter. If the combined rate of heat
An object 10 cm tall is located on the axis, in the air, 40 cm to the left of the left-hand vertex. find the position and size of the final image.
A puck of mass 80.0 g and radius 4.20 cm slides along an air table at a speed of 1.50 m/s as shown in the figure below. It makes a glancing collision with a second puck of radius 6.00 cm and mass 125.0 g
A 0.90 kg sample of carbon from the wood has an activity of 2060 decays per minute. Find the age of the charcoal.
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