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Gamma rays are photons with very high energy. How Many visible light photons with a wavelength of 500 nm would you need to match the energy of a gamma ray photon with energy 2.2x10^-13J
The same potential difference is applied across two wires. wire A carries half the current of wire B. If the resistance of wire B is r, what is the resistance of wire A
The intensity of sunlight that reaches Jupiter (orbiting at about 5 AU) is approximately what fraction of that at Earths orbital distance.
In a game of basketball, a forward makes a bounce pass to thecenter. The ball is thrown with an initial speed of 4.8 m/s at an angle of 14.2° below the horizontal. It isreleased 0.67 m above the floor. What horizontal distance does the ball cover ..
A 10 kg block has a speed of 9 m/s as it begins to slide up a ramp inclined 20o above the horizontal. What is the velocity of the blocks after the collision
If a packet is dropped off a flying plane where Will it land with respect to the plane?
anbsp32.5-kg crate rests on a horizontal floor and anbsp60.4-kg person is standing on the crate. determine the
The Big Bang Theory suggests leftover background radiation. Find the wavelength of this radiation
The power brick for the author's laptop computer has a power rating of 60 W. It uses a step-down transformer to convert the AC voltage from a wall socket (Vrms = 120 V) to a value near 12 V.
A bullet is fired into a large stationary absorber and comes to rest. Temperature measurements of the absorber show that the bullet lost 2080 J of kinetic energy, What is the mass of the bullet
A mass 100g rests on a second mass 850g that is attached to a spring with k = 75.0 N/m. What is the maximum amplitude the oscillation can have
An object is launched from a cliff (h meters above the ground) at t= 0 with an initial launch speed of v0 m/s at an angle of m/s at angle of above the horizontal. at t = 1 sec, the projectile reaches its highest point. At t=5 sec, the object lands th..
A 320-g mass and a 400-g mass are attached to the two ends of a string that goes over a pulley with a radius of 8.70 cm. Because of friction, the pulley does not begin to rotate. What is the magnitude of the frictional torque on the bearing of the..
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