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A car weighing 7600 Newton moves along a level highway with a speed of 100 km/h. The power of the engine at this speed is 70 kW. The car encounters a hill inclined at an angle of 9.9 degree with respect to the horizontal. If there is no change in the power of the engine, and no change in the resistive forces acting on the car, estimate the new speed of car on the hill? Answer in units of km/h.
An electrical point charge of 4.50 mC is located on the x-axis at x = 8.00 cm. A second point charge is located on the y-axis at y = 5.70 cm. What is the distance between the two charges
A 2130 satellite used in a cellular telephone network is in a circular orbit at a height of 800above the surface of the earth. What fraction is this force of the satellite's weight at the surface of the earth
A tuning fork vibrating at 513 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork
at t 0 a stone is dropped from the top pf a cliff above a lake. another stone is thrown downward 1.6s later from the
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
A concave mirror lies flat on the floor with F=1m. A ball isdropped from 3m. Describe the image of the ball as it fallsdown and determine at what time will the sizes be equal.
A parallel-plate capacitor has square plates that are 6.00cm on each side and 4.20mm apart. If the potential difference between the plates is 78.0V , how much electrical energy is stored in the capacitor
A 1.60 kg ball and a 7.20 kg ball are connected by an 80.0 cm long massless, rigid rod. The structure rotates about its center of mass at 320.0 rpm. What is the rotational kinetic energy of the structure?
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. How far will it travel in so doing
A satellite is put in a circular orbit about Earth with a radius equal to 50% of the radius of the Moon's orbit. What is its period of revolution in lunar months
q1. laser light at 635nm falls on a double-slit apparatus with slit separation 6.910-6m. find out the separation
How fast will the electron be moving. What was his average speed (in m/s) for the race.
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