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A drug that has an half life of 20 hours inside the human body and is administered intravenously (I.V.) into a patient.
A 980 Kg car traveling at 20 m/s rounds a curve of radius 40 m. What is the friction force that must act on the car to keep it in its circular path?
What maximum magnitude can it have if the ball is to strike the floor inside the back line on the other side of the net?
An artillery shell is fired with an initial velocity of 300 m/s at 55° above the horizontal. It explodes on a mountainside 42 seconds after firing.
One end of a spring is attached to a solid wall while the other end just reaches to the edge of a horizontal, frictionless tabletop.
An object with an initial velocity 8m/s moves along a straight line with constant acceleration and travels 640m in 40s.
What would the diameter of such a disk need to be if it is to store an amount of kinetic energy of E when spinning at an angular velocity of omega.
Merry-Go-Round. Two identical twins, Jena and Jackie, are playing one December on a large merry-go-round a disk mounted parallel to the ground.
Two inertial frames O and O' are in standard configuration. Write down the two equations relating spacetime intervals Delta x' and Delta t' in O'
A stone is thrown vertically downward with a speed of 6m/s from a cliff. How far down will the stone be from the cliff after 3.0 s?
A stuntman is being pulled along a rough road at a constant velocity, by a cable attached to a moving truck.
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.
For each of the first 7 seconds of freefall, calcucate the distance that the hammer fall, and its velocity at that particular moment.
Is the same result true if they land at different times (with one piece still landing 100m beyond the target)
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).