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Q1. The breaking stress for a wire of radius 'r' of given material is F N/ms square. Afterwards find the breaking stress for the wire of same material of radius 2r?
Q2. A 2.46 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 110 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 10.4 m/s, while spring is at first unstrained. What is the amplitude of the resulting simple harmonic motion?
The distance from the point on the surface of Earth to a point on a surface of the moon is measured by aiming a laser light beam at the reflector on the surface of moon and measuring the time required for the light to make a round trip.
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
The barricade at the end of a subway line has a large spring designed to compress 2.00 m when stopping a 1.60 ? 105 kg train moving at 0.300 m/s. What speed would the train be going if it only compressed the spring 0.900 m
The magnetic field in the region between the poles of an electromagnet is uniform at any time, but is increasing at the rate of 0.060 T/s. What is the magnitude of the induced emf
However, as the drawing shows, a plane mirror reflects light from the bird into your camera. If x = 4.2 m and y = 3.9 m in the drawing, for what distance must you set focus of the camera lens in order to snap a sharp picture of the bird's image.
The coil of a galvanometer has a resistance of 19.8 ?, and its meter deflects full scale when a current of 6.30 mA passes through it. What is the maximum current that this ammeter can read
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
A light rod of length 1.8 m has two point masses of mass 2 kg attached at either end. If the spring constant is 3.7 Nm.rad-1, what is the period of the resulting motion
A series RLC circuit has the following values: L =20mH, C=100 nF, R=20 Ohms, calculate the average power delivered to this RLC circuit
A 90 kg gentleman standing on slippery grass is pulled by his two rather unruly children.Overlooking friction, compute Pop's resulting acceleration
Wishing to move his television set to another room, the owner extends the aerial feeder cable, calculate the size of the signal transmitted across the join to the second cable
A ship sets sail from Rotterdam, The Netherlands, What is the angle of the velocity of the ship relative to the earth in degrees north of east
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