What is the density of the rock
A geologist finds that a Moon rock whose mass is 9.79 kg has an apparent mass of 6.50 kg when submerged in water. What is the density of the rock?
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What is the equation for the range of an aircraft moving at constant equivalent speed? Normally, the range is given by the Brequett eq. but its for aircraft moving at a constant speed.
A wire 1.80 m long carries a current of 13.0 A and makes an angle of 35.0 degrees with a uniform magnetic field of magnitude B = 1.50 T. Calculate the magnetic force on the wire.
The ring is 100 m in radius. How quickly must the space station turn in order to give the astronauts inside it apparent weights equal to their real weights at the earth's surface?
The standard deviation of a normally distributed population is equal to 10. A sample size of 25 is selected, and its mean is found to be 95.
Before heating, measurements indicate the volume in the piston/cylinder is 1.6 m3and its temperature is -26.4°C, while after heating its temperature is 100°C. Find the final volume inside the cylinder.
A proton is placed at rest near the positive side of two oppositely charged, parallel plates. There is a potential difference of 12 V. Calculate the amount of work done on the proton and the final speed of the proton just before it strikes the oth
Two carts A and B are moving in a straight line with velocities v and 2v respectively. The length of each of the carts is L. Cart A fires a projectile with an initial velocity u relative to cart A at initial angle ?
There is a heat-pump that takes water from one side of the tank heats it to 160 degrees F and discharges it into the other side of the tank at a rate of 210 gallons per minute.
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