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A 800 kg car is travelling forwards at + 25 m s?1 along a level road. The brake is suddenly applied, and the car skids to a stop leaving skid marks 75 m long. What is the acceleration during skidding?
Consider an airless, non-rotating planet of mass M and radius R. Calculate the ratio h/R of the projectile's maximum height to the planet's radius
A 2.0 kg mass is connected to a spring with a spring constant of 9.0 N/m. What is the period of this simple harmonic motion
a circular loop of wire 14 cm in diameter is placed with its normal at an angle ? = 37° with the direction of a uniform magnetic field of magnitude B = 0.51 T, What is the emf induced in the loop
What is the minimum soap-film thickness (n = 1.33) in air that will produce constructive interference in reflection for red (? = 644nm ) light
If the mass of a sliding block is tripled at the equal time the net on it is tripled, how does the resulting acceleration compare with original acceleration?
An proton (m = 1.67 ´ 10-27 kg and q = 1.6 ´ 10-19 C) travelling at 2.7 × 105 ms-1 enters a magnetic field of 1.2 T at right angles to the direction of motion of the electron. What is the centripetal force on proton.
A tuning fork of unknown frequency makes three beats per second with a fork of frequency 373 Hz, What is the frequency of this fork
A 120 W lightbulb and a 90.0 W lightbulb are connected in a series. what is the current through the two bulbs
Ann was reaching up to grab a box of cereal that was on top of the refrigerator. She had extended her arm as well as stood on her tip-toes to reach the box. Which primary muscle allowed Ann to extend her elbow and which 2 primary muscles allowed h..
A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. Determine the useful power output of the heat engine
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
What is the maximum force on a rod with a 0.100 uC charge that you pass between the poles of a 1.50 T strength permanent magnet at a speed of 5.00 m/s
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