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A ball of mass 0.5kg moving horizontally with a velocity of 30 m/s strikes a vertical wall and rebounds horizontally with a velocity of 20 m/s. Calculate the impulse (Ft) exerted by the wall on the ball and the fore acting if thee time of contact of the ball is 0.045s.
Find out the magnitude of the vertical component of the velocity
A helium-neon laser (wavelength = 630 nm) is utilized in a single-slit experiment with a screen 2.3 m away from the slit. If the slit is 0.13 mm wide, what is the width of the central bright fringe on the screen? Gauge this width using the location..
A 0.49 kg mass at the end of a spring vibrates 9.0 times per second with an amplitude of 0.20 m. Determine the total energy of the system
When you touch a friend after walking across a rug on a dry day, you typically draw a spark of about 2 mm. Estimate the potential diference between you and your friend before the spark
A spring is compressed by 0.0592 m and is used to launch an object horizontally with a speed of 3.21 m/s. If the object were attached to the spring, at what angular frequency (in rad/s) would it oscillate?
A cylindrical fishing reel has a moment of inertia of I=6.22×10-4 kg•m2 and a radius of 4.44 centimeter. Calculate the force of the fish on the line
The lines in a grating are uniformly spaced at 1520nm. Analyse the angular separation of the second order bright fringes between light of wavelength 603nm and 615.4 nm. Reply in units of mrad.
Nucleus A decays into the stable nucleus B with a half-life of 11.71 s. At t=0 s there are 1,384 A nuclei and no B nuclei. At what time will there be 546 B nuclei
The position of a particle moving along the x axis depends on the time according to x=ct^2-bt^3 where x is in meters, what distance does the particle move and what is its displacement
extension cords are often made from 1.0 mm diameter copper wire. a what is the resistance per unit length of this wire?
Two stationary point charges of 5.00nC and 2.00nC are separated by a distance of 50.0cm. What is the electric potential energy of the electron
A Styrofoam box has a surface area of 0.79 m2 and a wall thickness of 2.0 cm. determine the thermal conductivity of the Styrofoam.
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