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Waves moving on a lake have a speed of 2.8 m/s and a distance of 1.6 m between adjacent crests.
(a) What is the frequency of the waves?
Hz
(b) Find the period of the wave motion.
s
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How many balloons can the tank blow up
Two charged dust particles exert a force of 4.30×10-2 N on each other. What would be the force if they are moved so they are only one-sixth as far apart.
If s is measured in feet, the value of a is 3? How many seconds do you have to get out of the way of a chandelier wich falls from a 400 foot ceiling
q1. a wheel 66.0 cm in diameter accelerates uniformly from 211 rpm to 395 rpm in 7.5 s. how far will a point on the
A potential difference of 87mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell.
q1. a person eats a dessert that contains 220 calories. this calorie unit with a capital c is the one used by
A stunt driver is attempting to jump 20 cars of total length of 42m using an inclined ramp. Calculate how long the stunt driver is in the air during this stunt
Compute magnitude of the average velocity
The average distance of the planet Mercury from the sun is 0.39 times the average distance of the earth from the sun. How long is a year on Mercury in units of earth years
a force of 1250 N is used to push a piano up a ramp 12 m long to a height of 1.5 m above the ground. the piano weighs 7500 N. what is the work input and output
A particle moves along the x axis. It is initially at the position 0.270 m, moving with velocity 0.070 m/s and acceleration -0.410 m/s2. Find its velocity at the end of this time interval
To get the top spinning, its string is pulled with a tension of 0.30. Explain how long does it take for the top to complete the first five revolutions? The string is long enough that it is wrapped around the top more than five turns.
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