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Q1. A 52.0 skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.90. What speed does he need at the bottom?
Q2. A uniform electric field of magnitude 334 N/C is directed along the +y-axis. A 6.00 µC charge moves from the origin to the point (x, y) = (-40 cm, -33 cm).
What is the change in the potential energy linked with this charge?
a typical sedan ( like corolla Toyota) has unloaded mass of 1.2x10^3 kg. Determine the effective spring constant "k" for the suspension system for critical damping
A 662 KeV photon from 137Cs is compton scattered at an angle 60, calculate the energy of the scattered photon
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1450 W/m2. Find the rms value of the magnetic field.
A sphere of mass of m = 1.30 kg is first placed directly on the plate of an electronic scale. Calculate the density of the sphere
The fastest possible rate of rotation of a planet is that for which the gravitational force on material at the equator barely provides the centripetal force needed for the rotation. evaluate the shortest period of rotation
Your 85-kg friend (modeled in the picture as a box) is a window-washer and leans a ladder against a large frictionless window. What is the force from the wall on the ladder
A cylindrical container 2.00 tall contains mercury to a certain depth; the rest of the cylinder is filled with water. If the pressure at the bottom of cylinder is two atmospheres, what is the depth.
The mass of a robot is 5200 kg. This robot weighs 3750 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 107 m. What is the difference among MA - MB in the masses of these planets?
A scintillator absorbs an incident flux of 5 MeV alpha particles that totals 10^6 particles/s, estimate the expected signal from the photodiode
A 8.40 kg object oscillates at the end of a vertical spring that has a spring constant of 2.45 multiply.gif 104 N/m. Calculate the frequency of the dampened oscillation
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 104 m/s, and the radius of the orbit is5.00 106 m. What is the orbital speed of the second satellite
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