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Q1. A rectangular container measuring 25 × 39 × 63 is filled with water. What is the mass of this volume of water?An iron cube floats in a bowl of liquid mercury at 0 C.
a) if the temperature is raised to 28 C; will cube float higher or lower in the mercury?
b) By what percent would the fraction of volume submerged change?
Q2. Solve problems correctly.
1. If 2.13 X 10^6 of work must be completed on a roller-coaster car to move it 3.00 X 10^2 m, how large is the net force acting on car?
2. A force of 715 N is applied to a roller-coaster car to push it horizontally. If 2.72 X 10^4 J of work is done on car, how far has it been pushed?
3. In 0.181s, during a distance of 8.05m, a test pilot's speed decreases from 88.9m/s to 0 m/s. If the pilot's mass is 70kg, how much work is done against his body?
Compute dissimilarity in blood pressure
A 4.22 box sits at rest at the bottom of a ramp that is 7.74 long and that is inclined at 40.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
When in deep space, the block accelerates at 4.2 m/s^2 even as a 120 N force is applied to it. The coefficient of static friction for a particular plane and this block is 0.31. What angle can this plane make with horizontal before the object starts t..
A pilot flies an airplane at a constant speed of 520 km/hr in the vertical circle of radius 1400 m. compute the force exerted by the seat on the 105-kg pilot at point A and at point B.
Two speakers, one directly behind the other, are each generating a 429-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of ..
With the power supply disconnected, the dielectric material is removed and the potential difference between the plates is measured to be 500 V. What is the dielectric constant of the material that was at first used to fill the gap between the plates.
A rattlesnake can strike with the acceleration equivalent to an increase in speed from 0 to 60 mi/h in 1/2 s. If the rattlesnake's head weighs 0.33 lb, what average power does the rattlesnake generate throughout its strike.
An observer, whose eyes are 1.99 m above the ground, is standing 35.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 23.0° above the horizontal. Ho..
Two charges, and are the distance apart. These two charges are free to move but do not because there is a third charge nearby what should be the magnitude of the third charge and its placement in sequence for the first two to be in equilibrium.
What is coefficient of friction between chair and floor
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 meter per second. Find the velocity of the third piece?
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