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Estimate how many electrons there are in your body. Make any assumptions you feel are necessary, but clearly state what they are. (Hint: Most of the atoms in your body have equal numbers of electrons, protons, and neutrons.) What is the combined charge of all these electrons?
The graph shows how the force component Fcosalong the displacement varies with the magnitude s of thedisplacement. Find the work done by the force. (Hint: Recallhow the area of a triangle is related to the triangle's base andheight.)
Calculate the transmittance T and the reflectance R, that is, the relative amounts of power transmitted through and reflected from the boundary. Verify that your answers are consistent with the law os conservation of energy.
A 45.50 cm diameter disk rotates with a steady angular acceleration of 2.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.30° with the positive x-axis at..
The resistance of a bagel toaster is 14 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?
a boeing 747 jumbo jet has a length of 59.7 m. the runway on which the plane lands intersects another runway. the width
A Bullet of mass 14g strikes a block of mass 1.2kg, which is at rest on a horizontal frictionless surface and is attached to a coil spring shown. Find the velocity of the block just after impact
consider a small cube of ice enclosed in a reservoir so large that small transfer of heat does not change its
series RACA socket has some resistance and inductors and capacitors frequency is 50Hz and generator is 100 volts. Determine the inductive reactance
I just got this wrong for the third time. A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure.
Two high-current transmission lines carry currents of 25.0A and 75.0A in the same direction and are suspended parallel to each other 45.0cm apart. what magnetic force does each segment exert on the other
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. At what frequehcy would you expect resonant behavior
An equilateral glass prism is to be designed so that a light beam entering the prism perpendicular to the first face will be totally internally reflected once off the second face
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