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A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, what is its speed at the bottom of the ramp? Incorrect: Your answer is incorrect. At the bottom, it hits another stationary car with equal mass. The two cars have Velcro and stick together. At what speed do the two cars move after the collision?
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of4.50mT. The angular momentum of the electron about the center of the circle is4.00multiplied by10-25J·s. Determine the radius of the circular path
The earth's atmosphere pushes down on the surface of the earth with a force of 14.7 lb for each square inch of the earth's surface. What is the total weight of the earth's atmosphere
A conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that ..
compute the accelerations experienced by the blood.
a projectile is launched vertically from the surface of the moon with an initial speed of 1100m/s. At what altitude is the projectile's speed one-half its initial value
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail and the nail deflects downward by 2.00 x 10^-5. what is the diameter of the nail
The coldest and hottest temperatures ever recorded in Switzerland are -43.2 F (231 K) and 106.7 F(315K) respectively. What is the speed of sound in air at each temperature
A ball is thrown directly downward with an initial speed of 7.55 m/s, from a height of 30.2 m. After what time interval does it strike the ground
A uniform thin spherical shell has a raduis of 2.9 m and mass of 460kg and its center is located at the origin of a coordinate system. find the gravitional force of attraction between the two shells
A baseball pitcher throws a baseball horizontally at a linear speed of 42.5 m/s (about 95 mi/h). find the tangential speed of a point on the "equator" of the baseball
When a potential difference of 168V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of34.0nC/cm2. What is the spacing between the plates?
Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. What is the PERIOD of the water ripples
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