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A 5.00-g bullet is fired horizontally into a 1.20-kg wooden block resting on a horizontal surface. Thecoefficient of kinetic friction between block and surface is 0.20. The bullet remains embedded in theblock, which is observed to slide 0.230 m along the surface before stopping. What was the initial speed ofthe bullet?
a slide projector needs to create a 98-cm-high image of a 2.0-cm-tall slide. the screen is 300cm from the slide. assume
Every of the eight conductors in Figure 29-68 carry 2.70 A of current into or out of the page. Two paths are indicated for the line integral. What is the value of the integral for (a) path 1 and (b) path 2?
A light plane attains an airspeed of 370 km/h. The pilot sets out for a destination 800 km to the north but discovers that the plane must be headed 10° east of north to fly there directly. What was the j-component of the wind velocity vector
A 2.4kg object is moving along the x-axis at 1.55m/s. As it passes the origin, two forces F1 and F2 are applied, both in the y direction (plus or minus).
A rod of length L has a total charge Q uniformly distributed along its length, Find an expression for the electric potential as a function of position along the x axis
In a common but dangerous prank, a chair is pulled away as a personis moving downward to sit on it, causing the victim to land hard onthe floor. Suppose the victim falls by 0.50 m, the mass that moves downward is 70 kg, and the collision on the fl..
A mass 100g rests on a second mass 850g that is attached to a spring with k = 75.0 N/m. What is the maximum amplitude the oscillation can have
A blackbody is emitting radiation at a rate of 25 W at 27oC. what is the rate of emission
The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10-9 m2 and a thickness of 1.1 x 10-8 m, how many such ions are present on the outer surface
Xavier and Yvette are the only two persons on an island. There are only two goods, nuts and berries. Xavier's utility function is U(Nx; Bx) = NxBx. Yvette's utility function is U(Ny; By) = 2Ny + By. Xavier has 3 berries and 8 nuts. Yvette has 6 b..
A wave composed of two sinusoidal waves of identical amplitude but different frequencies has the equation s = 2A cos (45.0t) cos (67.0t) , where the coefficient of t is stated in rad/s. What is the lower of the two frequencies (in Hz) of the sinusoid..
the peak instantaneous current in a certain lightning stroke is 21700 a vertically upward. the current is approximately
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