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(a) The earth travels with an approximate speed of 29.9 km/s (66 900 mi/h) in its journey around the sun. The mass of the earth is 5.98 X 10^24 kg. Find the magnitude of its linear momentum.
(b) Is the direction of the earth's linear momentum constant? If not, describe how it changes and specify the force that causes it to change.
What work is done by the electric forc. begin from rest, a boat increases its speed to 4.00 m/s with constant acceleration. What is the boat's average speed.
question 1an infinitely long uniformly charged cylinder of radius r is shown.ausing symmetry arguments sketch the shape
If 3.00multiplied by10-3kg of gold is deposited on the negative electrode of an electrolytic cell in a period of2.73h, what is the current in the cell during that period
An ideal gas occupies 0.14 m3 at an absolute pressure of 1.2×105 Pa and temperature 280 K, How many moles of gas are there
Elizabeth is nearsighted. Without glasses, she can see objects clearly when they are between 15.0 cm and 90.0 cm away from her eyes. how close to her eye can an object be before it appears out of focus
What is the net force exerted by these two charges on the third charge = 46.5 placed between and at = -1.235 ? Your answer may be positive or negative, depending on direction of the force.
A horizontal force of 80N acts on a mass of 6 Kg resting on a horizontal surface. Calculate the total energy expanded in the acceleration
Alpha particles are accelerated through a potential difference of 1500 volts and then enter a magnetic field 0.4T perpendicular to their direction of motion. Calculate the radius of the circular path that they traverse. An alpha particle has mass 6.6..
A projectile is fired such that its horizontal range is equal to 2.0 times its maximum height. Find the angle the projectile was fired at
A heat engine performs 192 J of work in each cycle and has anefficiency of 41%. For each cycle of operation, how much energy is absorbed byheat? Answer in units of J.
Two college students having the same mass M roll toward each other on roller blades, each moving at the same speed v. What is the combined momentum of the two skaters?
A certain cavity has a temperature of 1150 K. (a) At what wavelength will the intensity of the radiation inside the cavity have its maximum value? [Do NOT need the answer to part (a); it is 2.52 mu m] (b) As a fraction of the maximum intensity, what ..
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