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I need expert help to solve the given problem:
Problem: On a seesaw, a 28-kg child sits 2.8 m from the pivot point.
Part A: Where should a 38-kg child sit to put the center of mass at the pivot?
I want help to find where a 38-kg child should sit to put the center of mass at the pivot.
A stunt pilot is attempting to drop a water ballon from a moving air plane onto a target on the ground. the plane moves at a speed of 79.69 m/s and a 39 above the horizontal when the ballon is released. at the point of release the plane is at an alti..
A circular loop of wire with areal A lies in the xy-plane. As viewed along the z-axis looking in the -z direction toward the origin, Determine the vector magnet moment of the current loop
what is the excess charge on a conducting sphere of radius r 0.36 m if the potential of the sphere is 1050 v and v 0
An oscillating block-spring system has a mechanical energy of 1.00 J, an amplitude of 10.0 cm, and a maximum speed of 1.20 m/s. find the mass of the block, and the frequency of oscillation
A person 1.7 m tall is standing 2.50m in front of a camera. Find the magnification and the height of the image on the film
Using the periodic boundary condition, ?k(x+L) = ?k(x) and noting that e(i2pn)=1, determine the allowed values of k in terms of L and an integer n. Are negative values of n allowed?
A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.3 rad/s^2 for 7.1 s, Find the total number of revolutions turned
An electric motor rotating a workshop grinding wheel at a rate of 124 rev/min is switched off. Find through how many revolutions does the wheel turn before it finally comes to rest
A camera has a lens(or combination of lenses) like the converging lens that focuses light from objects into real images ona piece of film. an enlarger shines light through a negative, anduses a lens to project a real image of the picture on the ne..
a billiard ball of mass 0.649 kg and speed 0.479 ms makes a head-on elastic collision with an identical billiard ball
A coil with an inductance of 1.8 H and a resistance of 6.7 ? is suddenly connected to a resistanceless battery with an ? = 80.0 V. What is the rate at which thermal energy is appearing
Three negative charges of equal magnitudes are positioned along the x-axis at x = -a, x=0, and x = +a respectively. The charge located at x=0 is moved away along the y-axis to a position (x,y) = (0, +a). How does the potential energy of the system..
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