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Q. For the normal force to have the similar magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Presume, for example, that the track has a radius of 2.40 m and that the driver goes past point 1 at the bottom with a speed of 18.00 m/s. What speed should she have at point 3, so that normal force at the top has the same magnitude as it did at the bottom?
Q. A solid has a volume of 8cm3. When weighed on a spring scale calibrated in grams, the scale indicates 20g. What does the scale indicate if the object is weighed as immersed in a liquid of density 2g/cm3?
What is final total energy of the system
What is the acceleration of two falling sky divers (mass 112.0 kg including parachute) while the upward force of air resistance is equal to one-fourth of their weight.
Consider a system composed of a mixture of 2.50kg of ice and 50 gr of liquid water and a small separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevent.
A solid, frictionless cylindrical pulley with a mass of 3kg and a 0.420 m radius is used to draw water from a well. A 1.50kg bucket is attached to a cord that is wrapped around the pulley. If the bucket starts from rest at the top of the well and ..
A pendulum of length 1.5 m is held out to point A. At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 1.09 m. (That is, 1.0 m is no longer free to swing.) How long does this pendulum take for one o..
Using Einsteins formula
A 33.0 g bullet moving at 434 m/s strikes a 5.0 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 295 m/s. How fast is the bag moving while the bullet exits.
Find out distance the two drivers travel
It is expected to measure an X-ray peak which occurs at an angle of around 31.6g. Alter viewing the scale and pointer, with what accuracy w ill you quote the result?
An athlete executing a long jump leaves the ground at a 35° angle and lands 7.30 m away.
What is the linear speed of the phonograph needle
The rock reaches a maximum height of 2×10^3 m, above the surface of the planet, before it falls back down. What was the first speed of the rock as it left the astronaut's hand.
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