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A soldier has a huge contraption that notches a large 1 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. The soldier does 124 J of work in the process setting the bow/arrow combination and then releases the arrow. What is the speed of the arrow?
A bullet of mass 13 g is fired with an initial speed of 289 m/s into a wooden block that is initially at rest. what is the mass of the block
A large parallel plate capacitor has plate separation of 0.90 cm and plate area of 283 cm2. How much work is done on the capacitor as the plate separation is increased to 1.80 cm
two metal spheres of radii r1 =13.9 cm and r2=41.7 cm, respectively, have been positively charged so that both have a total charge of 380uq what is the ratio of their surface charge distribution?
Postively charged aluminum ion AL3+ has a mass of 4.50^-26? kg. After being accelerated through a potential difference of 650 V, Calculate the radius of the path of the ion in the field
A small rock moves in water, and the force exerted on it by the water is given by equation f=kv. How high will the rock rise
The tuning circuit for an FM radio consist of 3.33 x10^-7 H inductor and a variable capacitor set at 7.31x10^-12F. What is the frequency of the electromagnetic wave that can be received by the radio turner at that setting?
A 2.4 mm-diameter copper wire carries a 30 A current (uniform across its cross section). Determine the magnetic field at the surface of the wire
Derive an expression for the surface temperature of the Sun, in terms only of its solid angle, its flux per unit wavelength f(lambda1) at Earth at one wavelength (lambda 1) and its fundamental constants
The tangential speed of a particle on a rotating wheel is 3.5m/s. how long will the particle take to make one revolution
There is a charge of -3e locked down at a point on a table. 15 meters away, a charge of 3e is released from a scientists hand. What is the potential energy of the charge just as it is released from the scientists hand
A 2.6-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 5.0° with the vertical, as shown in the figure below. Find the acceleration of the car.
While a roofer is working on a roof that slants at 44.0 above the horizontal, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 18.0
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