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Party stores sell small tanks containing 40 g of helium gas. If you use such a tank to fill 0.012 m^3 foil balloons (which don't stretch, and so have an internal pressure that is very close to atmospheric pressure), how many balloons can you expect to fill? Assume the temperature is 20 C.
Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 45.5m/s2 for a height 63.0cm, What is the speed of the shot when he releases it
At each of the designated points, rotate the given vector to indicate the direction of the force exerted by the water on either the inside of fishbowl (for points A and B) or the outside of the goldfish (for points C, D, and E).
If the same fish is attached to the end of the unstretched spring and then allowed to fall from rest, elucidate through what maximum distance does it stretch the spring?
A school bus takes 0.89 h to reach the school from your house. If an average velocity of the bus is 21.1 km/h to the east, what is the displacement.
A child on roller skates undergoes an acceleration of 0.8 m/s2 due to a horizontal net force of 20 N. What is the mass of the child
If the trough is being filled with water at the rate of 0.3 m3/min explain how fast is the water level rising when the water is 10 cm deep?
In bouncing off a racket, a 50 g tennis ball had its velocity changed from 15 m/s in the forward direction to 20 m/s, how long was the ball in contact with the racket
An airplane is flying with a velocity of 83.0 at an angle of 25.0 above the horizontal. When the plane is a distance 114 directly above a dog that is standing on level ground, the suitcase drops out of the luggage compartment.
The central star of a planetary nebula emits ultraviolet light with wavelength 104nm, What is the first-order diffraction angle
To determine the specific heat of an object, a student heats it to 100 in boiling water. She then places the 68.5 object in a 196 aluminum calorimeter containing 135 of water. what is the specific heat of the object
Three point charges are fixed to rectangular coordinate system, Calculate the magnitude and direction of the net electrostatic force on the charge on the x-axis
An electron is at rest just above the surface of a sphere with the radius of 1.90 mm and a uniformly distributed positive charge of 2.1 x10-15 C.
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