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The velocity of a 1.9 kg block sliding down a frictionless inclined plane is found to be 1.15 m/s. 1.40 s later, it has a velocity of 5.35 m/s.
A volleyball is spiked so that it has an initial velocity of 15 m/s directed downward at an angle of 55 degrees below the horizontal.
How fast does a proton have to be moving is order to have the same de Broglie wavelength as an electron that is moving at 3.75x10^6 m/s? Units are m/s.
For each of the first 7 seconds of freefall, calcucate the distance that the hammer fall, and its velocity at that particular moment.
Which material would have the strongest compressive strength?
Is the same result true if they land at different times (with one piece still landing 100m beyond the target)
Name the three kinds of strength used to characterize materials AND give an example of a material that are strong in each of these modes.
On 15 March 2012, researchers at the National Ignition Facility fired all 192 laser beams at once to deliver 1.875 MJ of energy in 23 billionths
How would you describe the amount of distance fallen each second for an accelerating object?
Consider a beam of monoenergetic photons incident on a slab of water as depicted below. The energy per photon is 5 MeV and the indicent photon
For each of the first 7 seconds of free fall, calculate the distance that the hammer falls and its velocity at that particular moment.
Suppose that a rocket is fired straight up, from the surface of the Earth with a velocity that is exactly half of the escape velocity.
What recoil velocity does she acquire in response to a single shot from a stationary position, assuming that no external force keeps her in place?
According to Newton's Third Law, a force in one direction produces an equal force in the opposite direction.
If you repeated the same experiment on the Moon, what would you notice? Again, how do you support your answer?
Calculate the time averages of the kinetic and potential energies and compare the results of the viral theorem.
What is the frequency of the light? Using scientific notation, (Round your answer to two decimal places).
The weight that will cause a wire of diameter d to stretch a given distance, for a fixed length of wire, is proportional to what?
If a radioactive parent isotope decays to produce a stable daughter isotope, what will be the daughter to parent ratio (D/P) after 9 half-lives?
A basketball player is balancing a spinning basketball on the tip of his finger. The angular velocity of the ball slows down from 18.5 to 14.1 rad/s.
Consider the following nuclear processes which are used to produce isotopes used in medical imaging:
Verify that the gravitational force - GMmr/r2 on a point mass m at r, due to a fixed point mass M at the origin.
A lunar landing craft needs to hover just above the surface of the moon, which has a gravitational acceleration of (1/6) g.
Compare the nuclear radii of the following nuclides: (2 1H), (60 27Co), (197 79Au), (129 94Pu).
A car has been traveling up along a 2 percent grade at a constant speed of 55 miles/hr.