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A 50 kg box is resting on an inclined surface of 32 degrees. The coefficient of friction between the box and the surface is 0.45. Draw a force diagram and express the equations for all the x and y forces.
what is the minimum speed need to drive through a banked turn such a car wont slip down the road. the turn is banked at
An ideal gas at 12.4 °C and a pressure of 1.41 x 105 Pa occupies a volume of 2.85 m3. How many moles of gas are present
A 710 N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other side because of a lack of friction among his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward..
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 69.40 diopters, How far (in meters) is the blackboard from her eyes
A uniform meter stick is at rotational equilibrium when a mass 200 g is suspended at the 5 cm mark, a mass of 150 g is suspended at the 80 cm mark and the support is placed at the 40 cm mark. What is the mass of the meter ?
a rod of length L lies along the x-axis between x=A and x=A+L. The rod has a non-uniform charge density, What is the magnitude of the electric field at the origin
What is the radius of the turn?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the vertical component of the ball's velocity right before Sarah catche..
What is the magnification of an astronomical telescope whose objective lens has a focal length of 79 cm and whose eyepiece has a focal length of 2.9 cm ? Follow the sign conventions. Express your answer using two significant figures.
Consider two oppositely charged, parallel metal plates. The plates are square with sides L and carry charges Q and -Q. What is the magnitude of the electric field in the region between the plates
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 327 N for 7.1 s, What is the work done by friction
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