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Q1. A flight attendant pulls her 68.0 N flight bag a distance of 315 m along a level airport floor at a constant speed. The force she exerts is 40.0 N at an angle of 60.0° above the horizontal.
Q2. A 1600 kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16430 N on the sub, with a downward resistive force of 1000 N. What is the submarine's acceleration?
Q3. The drawing shows a person (weight W = 579 N, L1 = 0.838 m, L2 = 0.409 m) doing push-ups. Find out the normal force exerted by the floor on each hand and each foot, assuming that person holds this position.
What is instantaneous acceleration
Question on constant speed
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
The forklift and operator have a combined weight of 10000 lb and a center of gravity at G. Find the maximum vertical acceleration given to a pipe, and the normal reactions acting on the wheels.
Determine the new planets mass density to earth mass density
What is mass of the ice cube
Discover the magnitude of acceleration
Vector A points in the negative y direction and has a magnitude of 3 units. Vector B has three times the magnitude and points in the positive x direction. Find out the direction and magnitude of the following vectors.
A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom.
A 32.0 kg hammer strikes a steel spike 2.70 cm in diameter while moving with speed of 24.0 m/s. The hammer rebounds with speed 11.0 m/s after 0.110 s. What is an average strain in the spike all through the impact.
A 43kg block of ice slides down the frictionless incline 1.50m long and 0.82m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
A toroidal solenoid has a mean radius of 11.0 cm and a cross-sectional area of 5.00 cm2 and is wound uniformly with 100 turns. A second coil with 500 turns is wound uniformly on top of the first. What is the mutual inductance of these coils.
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