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Q. The wheel in the figure below has eight equally spaced spokes and a radius of 30cm. It is mounted on a fixed axle and is spinning at 2.10 rev/s. You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
Q. A 10gram bullet is fired horizontally from a gun and embeds itself into a 50gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 100 meters before eventually coming to a stop. Decide the initial velocity of the bullet when it left the gun.
Find the force on each side of the loop and the torque acting on loop.
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
What is least amount of work required by an external force
Calculate the time constant that is equal to the time taken by a capacitor to fully charge or discharge.
How much does the spring stretch. A 1200 {rm kg} car traveling at a speed of 15 {rm m/s} skids to a halt on wet concrete where f_k = 0.20. how long are the skid marks.
An artillery shell is fired with a minimal velocity of 470m/s at 50o above the horizontal. To clear an avalanche, it explodes on a mountain side 38 s after firing.
Three forces are applied to a tree sapling, to stabilize it. If F1= 282 N and F2= 355 N, find F3 in magnitude and direction. The angle between F1 and F2 is equivalent to 110 degrees.
What is swimmer velocity relative to the bank
What is the magnitude of an average acceleration of the ball
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
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