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If I decelerate for 97 m at 2.4 m/s2 and at the end my speed is 15 m/s, How fast was I going when I started to decelerate? can you explain me what formula I have to use and why?
two solenoids of radii 2.0 cm and 5.0 cm are coaxial. they are each 25 cm long and have 500 and 2000 turns
Two bicycle tires are set rolling with the equivalent initial speed of 5.0 m/s along a long, straight road, and distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 {rm psi} and goes the dist..
An asteroid in an elliptical orbit about the sun travels at 1.3 106 m/s at perihelion (the point of closest approach) at a distance of 2.2 108 km from the sun
Volcanoes on the Earth eject rocks at speeds of up to 160 m/s. Consider a 1260 m high volcano that ejects rocks in all directions. What is the maximum height above sea level reached through rocks.
A 14 g ball of clay travelling east at 3.0 m/s collides with a 30 g ball of clay travelling north at 2.00m/s. What are the speed and the direction of resulting 44 g ball of clay.
A parachute dropped from a 30 meter-high clifffalls with a constant velocity of 1.5 meters per second. How long does it take for the stone to hit the ground
A particle of mass 0.300 kg is attached to the 100-cm mark of a meter stick of mass 0.125 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark. kg •m2/s
A piece of copper wire has a resistance per unit length of 5.70x10-3 ohms/m. Find the magnetic field strength at the center of the coil
a 1500 kg car on a hydrolic lift rests on a cylinder with a piston of radius 0.20m. what force must be applied to this smaller piston in order to lift the car
A satellite is in a circular orbit about the earth (ME = 5.98 x 1024 kg). The period of the satellite is 2.11 x 104 s. What is the speed at which the satellite travels
Two coplanar and concentric circular loops of wire carry currents of I1 = 6.20 A and I2 = 2.50 A in opposite directions as in the figure below. (a) If r1 = 12.0 cm and r2 = 8.60 cm, what is the magnitude of the net magnetic field at the center of ..
A quarter (diameter = 2.40 cm) is held at arm's length (64.0 cm). What is the ratio of the angular size of the quarter to that of the sun
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