Find speed at which swimmers walk if the raft is not to move
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The punter on a football team tries to kick a ball so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degree above the ground, what is the hang time.
The elemental analysis of an organic solid extracted from gumarabic showed that it contained 40% C, 6.7% H, and 53.3% O. Asolution of 0.650 g of the solid in 27.8 g of the solvent diphenylgave a freezing point depression of 1.56 degrees Celsius.
The impact between B and C is perfectly plastic and the coefficient of kinetic friction between B and C is 0.2. Determine (a) the velocity of the bullet B after the first impact (b) the final velocity of the carrier.
A charge of 40pC is distributed on an isolated spherical conductor that has a 4cm radius. Point a is 1cm from the center of the conductor and point b is 5cm from the center of the conductor. Determine the electric potential difference Va-Vb.
Determine (a) the speed of the raft if B does not move (b) the speed at which B must walk toward A if the raft is not to move.
Determine (a) the velocity of sphere A after the collision (b) the angle theta and the speeds of the two pieces after the collision.
Calculate the amount of methanol that you would use to recrystallize the sample. If the crystals arecollected at 25oC, what is the maximum possible recovery?
What will be the percentage change in power output if the voltage drops to 105 ? Assume no change in resistance. How would the actual change in resistivity with temperature affect your answer?
Caustic soda is 19.1m NaOH and is diluted for householduse. What is the household concentration if 10mL of the concentrated solution is diluted to 400mL?
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