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Q. A plane mirror and the concave mirror (f = 8.70 cm) are facing each other and are separated by a distance of 23.0 cm. An object is placed between the mirrors and is 11.5 cm from each mirror. Consider the light from the object that reflects first from plane mirror and then from the concave mirror. Find out the location of the image that this light produces in the concave mirror. Identify this distance relative to the concave mirror.
A 40 kg crate is pulled across the ice with a rope. A force of 100 N is applied at an angle of 30 degrees with the horizontal. Neglecting friction.
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
The electric motor of a model train accelerates the train from rest to 0.580 m/s in 33.0 ms. the total mass of the train is 563 g. Find out the average power delivered to the train during its acceleration. The units need to W for the final answer.
A gymnast with mass m1 = 41 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at least the gymnast stands at the left end of..
Block 1, of mass m_1 = 0.500 kg, is connected over an ideal (massless and frictionless) pulley to block 2, of mass m_2. Suppose that the blocks accelerate with an acceleration of magnitude a = 0.550 m/s^2 and that coefficient of kinetic friction b..
Six artificial satellites complete one circular orbit around a space station in the same amount of time. Each satellite has mass and radius of orbit. The satellites fire rockets that provide force needed to keep a circular orbit around the space stat..
What is the difference between mass and weight? On earth, what is the weight of a 1 kg mass?
If the coefficient of friction between road and tires on a rainy day is 0.120, what is the minimum distance in which the car will stop.
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
The magnitude of the force of friction acting on the block between A and is 1.2N and points A and B are 0.5 m apart. If the kinectic energies of the block at A and B are 4J and 5.6 J, respectively, how much work is done on the block by the force p..
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
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