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Find the magnitude of , the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, t, and v.
Calculate the time the microgel would require to recover to 99% of its initial height after the stress is removed. Determine the potential barrier for the molecule aggregation?
Suppose the peak of a particular star's spectrum occurs at about 6000 Å (Angstrom). (a) Use Wien's law to calculate the star's surface temperature. (b) If this star were a factor of four hotter, at what wavelength would its spectrum peak? In what ..
A tiger leaps horizontally from a 5.90 m high rock with a speed of 4.10 m/s. How far from the base of the rock will she land.
Express your reply in terms of the cylinder's radius r and the magnitude of the acceleration because of gravity g.
Many people mistakenly believe that the astronauts orbiting the earth are "above gravity." Compute the acceleration because of gravity, g, for space shuttle territory, 245 kilometres above the earth's surface (dashed line in sketch). Earth's mass ..
A toy train rolls around a horizontal 1.30 diameter track. The coefficient of rolling friction is 0.10.
A group of hikers hears an echo 3 s after shouting. If temperature is 16°C, how far away is the mountain that reflected sound wave.
use the inverse square law to display that in space shuttle territory, 200 kilometers above earth's surface, the force of gravity on a shuttle is about 94 percent of that at earth's surface.
What is the greatest mass that can be accelerated upwards at 2.9 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, that is 2.2 108 Pa.
A 2 kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of the net force acting on the ball while it is traveling upward?
A 4.00-g bullet is moving horizontally with a velocity of +355 m/s, where + sign indicates that it is moving to the right. The bullet is approching two blocks resting on a horzizonta frictionless surface.
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
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