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The mass of an elevator plus occupants is 752 kg, The tension in the cable supporting the elevator is 8950 N.
What is the unbalanced force?
What is the elevator's acceleration?
If you are driving this car in Europe and want to compare its mileage with that of other European cars, express this mileage in km/L (L=liter).how many tanks of gas will you use to drive 1400km
a 30-m-long rocket train car is traveling from los angeles to newyork at 0.5c when a light at the center of the car
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber, what is the area (in m2) of the leaf
A 43 kg flywheel with a radius of gyration of 0.20 m is supported on a single bearing at its center of rotation. Determine the time required for the friction to stop the flywheel from rotating. Also determine the angular displacement in this time pe..
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 220 m/s. Find the emf induced between the wing tips
A 300kg piano slides 4.10 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.4. Determine the force exerted by the man.
Can you have angular velocity if an object does not move linearly? Explain. Can you have angular velocity if an object is moving linearly? Explain
Two objects with different masses are stuck together and attached to the ends of two strings coming down from a mass less, frictionless pulley. explain will the tension in the rope change
The inner and outer surfaces of a cell membrane carry a negativeand positive charge, respectively. estimate the magnitude of the electric field in the membrane
A soccer ball with a mass of 448g bounces off the crossbar of a goal and is deflected upward at an angle of 56.2° with respect to horizontal. Immediately after deflection, the kinetic energy of the ball is 47.70 J. What are the vertical and horizo..
A spring with a spring constant k of 18 N/m is stretched a distance of 12 cm (0.12 m) from its original unstretched position. What is the increase in potential energy of the spring?
Initially at rest, a small copper sphere with a mass of 2.77·10^-6 kg, What is the radius of curvature of the sphere's motion in the magnetic field
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