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Determine what is the optimal speed (no friction required) for a van traveling around a banked curve that has a bank angle of 8.0o and a radius of 35 m? Explain what happens if the van travels slower than this speed? Explain what happens if the van travels faster than this speed?
A 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump.
tarzan swings on a 28.0 m long vine initially inclined at an angle of 32.0° with the vertical. what is his speed at the bottom of the swing if he starts from rest
The radioactive isotope has a half-life of 2.60 y and has a half-life of 87.0 days . They each emit positive β- particles or positrons. what will the count rate be at that time
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.970c. compute your breathing rate
Light consisting of two wavelengths 500 and 520nm, is incident normally on a plane diffraction grating with d=1?. Find the linear separation of the two first-order principal maxima
a rectangular solid made of carbon has sides of lengths 1.0cm 2.0cm and 4.0cm lying along the xy and z axes.
An ideal gas occupies a volume of 2.4 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
A 2.5 meter long pole is balanced using a cord. The wall is on the left and the cord is horizontally attached to the pole, making a 90 degree angle. The pole is making contact with the floor at 60 degree angle. Draw a careful lever arm diagram for th..
A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section, Calculate the smaller section's pressure
1.two paths lead to the top of a big hill. one is steep and direct while the other is twice as long but less steep.
a carnot engine absorbs 53.2 kj as heat and exhausts 33.0 kj as heat in each cycle. calculate a the engines efficiency
Atmospheric scientists studying clouds in the Marshall Islands have observed what they believe to be the world's largest raindrops, with a radius of 0.52 cm. How many molecules are in these monster drops
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