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A 200g block is released from rest at a height of 25 cm on a frictionless 30 degree incline. It slides down the incline and then along a frictionless surface until it collides elastically by an 800 g block at rest 1.4 m from the bottom of the incline.
How much later after the first collision do the two blocks collide again?
Light with a wavelength of 618 nm passes through a slit 7.52 wide and falls on a screen 1.88 m away. compute the linear distance on the screen from the central bright fringe to the first bright fringe above it.
A 5 N force acts on a 0.4-kg object for 0.3 seconds. By how much does the object's momentum change
What is the magnitude of the acceleration of an electron at a point where the electric field has magnitude 6667 N/C and is directed due north
A common flashlight bulb is rated 0.30 A and 2.9 V. what is the temperature of the filament when the bulb is on
A woman supports a 50 kg barbell at 90 degrees by contracting the biceps in both arms. how much force her biceps must produce to support the barbell
q1. suppose that in franck-hertz experiment electron of energy 12.5 ev is used to excite hydrogen atoms. what is the
A particle moves along the x axis. It is initially at the position 0.190 m, moving with velocity 0.250 m/s and acceleration -0.350 m/s2. Find the angular frequency of the oscillation
point p is at a potential of 540 kv and point s is at a potential of 250 kv. the space between these points is
A student drops a ball from the top of a tall building; the ball takes 3.1s to reach the ground. What is the height of the building
a 1kg object falls form a height h240m with initial velocity of 14ms penetrating into sand a distance of .2m. find the
A person with perfect pitch sits on a bus bench listening to the 450 Hz horn of an approaching car. If the person detects the frequency of 470 Hz, how fast is the car moving.
question1the relatively high resistivity of dry skin about can safely limit the flow of current into deeper tissues of
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