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A roller coaster car (mass = M) is on a track that forms a circular loop (radius = r) in the vertical plane. If the car is to just maintain contact with the track at the top of the loop, Obtain the minimum value for its speed at that point?
An object is located 10 cm in front of a mirror that forms an image of the object on a wall 300 cm, What type of mirror is required to form this image?
Consider the circuit in the figure. Suppose the circuit elements have the following values: = 12.5 V, R = 6.50 ?, and L = 28.0 mH. Calculate the voltage across the resistor after one time constant has elapsed since the switch has been closed
Eight books, each 3.90 cm thick with mass 1.70 kg, lie flat on a table. How much work is required to stack them on top of each other.
A 6.6 x10^-5 meter wide slit in an opaque screen is clarified by monochromatic light with a wavelength of 543.5 nanometres from a laser. What is the angular spacing between the mainly intense maximum and the nearest minimum in the pattern of emerging..
A 7.6 cm diameter horizontal pipe gradually narrows to 4.8 cm . When water flows through this pipe at a certain rate, What is the largest size vehicle
A small block on a frictionless horizontal surface has a mass of 2.25×10?2kg . It is attached to a massless cord passing through a hole in the surface. (See the figure below (Figure 1) .) The block is originally revolving at a distance of 0.255m from..
A 55 kg person riding a bike puts all her weight on each pedal when climbing on a hill. How could she exert more torque
A production line inspector wants a mirror that produces an upright image within magnification of 7.4 when it is located 15 mm from a machine part.
The vertices of a rectangle
In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that gets hot when turned on. When the heater is first turned on, it has not yet heated up, so it is operating at 20° C. What is the current through the wi..
A physics professor demonstrates the Doppler Effect by tying a 550 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 120 rpm. Suppose the room temperature is 20oC. What is the highest frequency heard wi..
A person with a mass of 52 kg runs with a speed of 6.8 m/s jumps onto the outer rim of a merry-go-round. The merry-go-round has a radius of 1.5 m and can be modelled as a large disk. The merry-go-round was initially at rest before the person jumped o..
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