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The maximum speed of a child on a swing is 5.3 m/s. The child's height above the ground is 1.2m at the lowest point in his motion. How high above the ground is he at his highest point? (ignore dissipative forces)
An alpha particle is a nucleus of Helium. It has twice the charge and four times the mass of the proton (mp = 1.67 x 10-27 kg, c = 1.60 x 10-19 C). What is their distance of closest approach
a conducting sheet carries a surface current density of k amperesmeter. there are no other currents in the vicinity.a-
the pressure gauge on a tank registers the gauge pressure which is the difference between the interior and exterior
Elements in the sixth representative group tend to (lose one, lose two, gain one, gain two) when they participate in the ionic bonding
a 81.3 g mass of iron is formed into a right circular cylinder shaped so that its diameter equals its height. you will
calculate the heat absorbed by 19.5 g of tef6 when its temperature changes from 500 k to 750 k at
Describe a typical problematic feature of a curve fitted with polynomial regression using polynomials of degree 10.
A copper wire and an aluminum wire of the same length have the same resistance. What is the ratio of the diameter of the copper wire to that of the aluminum wire
Four objects are situated along the x axis as follows: a 1.70kg object is at -0.9m, a 1.60kg object is at 0.2m, a 2.4-kg object is at the origin, and a 2.50kg object is at -1.10m.
A helicopter lifts a 72 kg astronaut 19 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/12. How much work is done on the astronaut
A transformer has 390 turns in the primary coil and 230 in the secondary coil. What kind of transformer is this, By what factor does it change the current
A 2g marble is fired vertically upward using a springgun. what is the spring constant
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