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A child who has a mass of 24 kg slides down a slide from a height of 3.9 m. If friction does a non-conservative work of -165 J, what is the speed (in m/s) of the child at the bottom of the slide? The acceleration due to gravity is 9.81 m/s2.
To water the yard, you use a hose with a diameter of 3.5cm . Water flows from the hose with a speed of 1.5m/s. with what speed does water spray from the hose
The Tevatron at the Fermi National Laboratory (Fermilab) west of Chicago is a particle accelerator capable to produce protons at a total energy of one teraelectronvolt i.e. 1 TeV. What is the Lorentz gamma factor for these protons
in a silicon junction diode the region of the planar junction between n-type and p-typenbspsemiconductors can be
a rock of mass m 1.35 kg is dropped from a height of h 2.7 m into a pool of water. at a time of t 1.37 s after
What is voltage difference between floor and hover-board
Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. calculate the power of the lens in the reading glasses
A potter's wheel (a solid, uniform disk) of mass 6.0kg and radius 25cm spins about its central axis with an angular speed of the wheel is 15rpm, Find the new angular speed of the system in rpm
A system consists of two positive point charges, q1 and q2>q1. The total charge of the system is +62.0 μC and each charge experiences an electrostatic force of magnitude 85.0 N when the separation between them is .270 m. Find q1 and q2.
A hypothetical nucleus weighs 1 lb. How many nucleons are in this nucleus and What is the radius of this nucleus
Suppose the moon were held in its orbit not by gravity but by a massless cable attached to the center of the earth. What would be the tension in the cable
A diver running 2.5m/s dives out horizontally from the edge of a vertical cliff and 2.9s later reaches the water below. How far from its base did the diver hit the water
A golf ball strikes a hard, smooth floor at an angle of 20.6 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.0298 kg, and its speed is 34.6 m/s just before and after striking the floor. What is the magnitude of t..
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