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Q1. A Volkswagen is stopped at a traffic light. When the light turns green, the driver accelerates so that the car is going 12 m/s after 5s. What is car's average acceleration?
Q2. Two horizontal forces act on a wagon, 850 N forward and 300 N backward. What force is needed to produce a net force of zero?
Q3. Agree on the mass of the earth knowing that the mean radius of the moon's orbit about the earth is 248,910 mi and that the moon requires 28.32 days to complete one full revolution about earth.
Find the radius of the largest water drop
A submarine dives 90.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of submarine's displacement? (Imagine that upward and the direction of the submarine's horizontal motion is positive.)
What are speed and direction of the ball after the collision
What is an average power output of the laser. What is the rms value of the electric field in the beam.
How the system comes to thermal equilibrium
What is the main possible displacement of the shopper
Write down an expression for the mass of the nucleus
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
What is the ratio of the amplitude
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
Assume that a binary star system consists of two stars of equal mass. They are observed to be separated by 310 million kilometres and take 4.0 Earth years to orbit about the point midway between them.
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