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Gamma rays (γ-rays) are high-energy photons. In a certain nuclear reaction, a γ-ray of energy 0.381 MeV (million electronvolts) is produced. Compute the frequency of such a photon.
A flowerpot falls from a windowsill 25 m above a sidewalk. How fast is the flowerpot moving in 2 seconds
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. The pendulum swings up to a maximum height of 15 cm. Calculate the velocity of the bullet right before it collides with the pendulum
The blackbody emission spectrum of object A peaks in the ultraviolet region of the electromagnetic spectrum at a wavelength of 140 nm . That of object B peaks in the red region, at 660 nm.
an lc circuit consists of a capacitor with c 3.4 x 10-6 f and an inductor with l .08h. at t 0 the capacitor has
A battery with an Emf of 22.0 V has an internal resistance of r. It is connected to an external resistance of 280. Determine the power dissipated by the external resistor
Critically evaluate the factor in the external environment that impact directly on the HR strategy in its creation and execution .use example to support.
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, find the power delivered to the customer
As an 800 Kg elevator is initially moving downward at 10m/sec; it slows to a stop with a constant acceleration in a distance of 25 meters. Find the value of the acceleration
A place kicker should kick a football from a point 35m (about 38.0 yd) from the goal, and the ball should clear the crossbar, which is 3.05 m high. When kicked, ball leaves the ground with a speed of 21.0 m/s at an angle of 55° to the horizontal.
A particle of mass 0.500 kg is attached to the 100 cm mark of a meter stick of mass 0.100 kg. What is the angular momentum when the stick is pivoted about an axis perpendicular to the table through the 0 cm mark
a rigid tank is divided into two rooms by a membrane both containing water. room a is at 200 kpa ??0.5 m3kg va1 m3 and
a grating with 396 linesmm is illuminated with light of wavelength 343 nm. what is the angular separation between the
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