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a car traveling due east at 20 m/s reverses its direction over a period of 10 seconds so that it is traveling due west at 20 m/s. What is the direction of the car's average acceleration over this period?
An object 3.25 cm high is placed 18.0 cm in front of a convex mirror with radius of curvature of 8.30 cm. Where is the image formed
Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
The position of a particle in cm is given by x = (7) cos 9?t, where t is in seconds, What is the frequency, What is the period, What is the amplitude of the particle's motion
A spacecraft approaching the earth launches an exploration vehicle. After the launch, What is the speed of the exploration vehicle relative to the spaceship
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. find out the x-component of this vector.
A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.542, How much force is needed to keep the book moving at constant speed once it begins moving
A 200 g ball on a 60 cm long string is swung in a vertical circle about a point 200cm above the floor. The tension in the string when the ball is at very bottom of the circle is 4.4 N.
Find the force exerted by the plane on the pilot
Find the speed of a satellite moving in a circular orbit just above the surface of Mars. Mars has a radius of 3.40 106 m and a mass of 6.42 1023 kg
The sinusoidal wave is traveling in the positive x-direction and has a frequency of 21.4 Hz. The wavelength is 10.4 cm, the amplitude is 4.13 cm, and the period is 0.047 seconds. What is the wave's speed?
If the spring stretches by 2.4cm, what is the coefficient of static friction between the backpack and the table.
The second minimum in the diffraction pattern of a 0.12 mm -wide slit occurs at 0.68 degrees. What is the wavelength of the light?
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