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State the number of images formed when an object is between two plane mirror placed in parallel.
In 1980, over San Francisco Bay, a large yo-yo was released from a crane. What was the magnitude of the acceleration of the yo-yo during (a) its fall
A sample is being analyzed 5800 years after undergoing an alpha decay process. As the technician is analyzing, he observes the sample contains only 8.5% of the radium nuclei it initially contained. What is the half-life of the radium nuclei?
you are trying to determine the wavelength of a particular line of a samples emission spectrum using a diffraction
An 8.0-kg object rests on the floor of an elevator which is accelerating downward at a rate of 1.3 m/s2. What is the magnitude of the force (in N) that the object exerts on the floor of the elevator?
A hot air balloon is ascending straight up at a constant speed of 6.90 m/s. When the balloon is 13.0 m above the ground, a gun fires a pellet straight up from ground level with an initial speed of 31.0 m/s.
Repeat the calculation for the 3d^10 delta p 2^P_3/2 ---> 3d^9(delta)s^2 2^D_5/2 transition at 510 nm in the copper-vapour laser, given that the Einstein A coefficient is 2 x 10^6 s^-1 and the fluorescence lifetime of the lower laser level is appr..
Vector A is 5.5 cm long and points along the x axis. Vector B is 7.5 cm long and points at +30° above the negative x axis. Determine the sum of these two vectors in terms of magnitude and direction
Finding An Object With Its Speed And Time
A spaceship traveling at speed .5c towards earth ejects a spacepod traveling in the forward direction at speed .25c relative to the spaceship, what is the speed of the light signal relative to the earth in terms of c
Skiers ski down from the top of a mountain that is 580 meter above a valley. Find the gravitational potential at the top with respect to the valley
a meter stick is charged with 20 micro coulombs by placing it on a van de graff generator. assume that the charge is
A cart with mass 310 g moving on a frictionless linear air track at an initial speed of 1.0 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
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