Baseball thrown at a certain angle
A baseball is thrown at an angle of 28 degrees relative to the ground at a speed of 25.6m/s. The ball is caught 55.3841m from the thrower. The acceleration due to gravity is 9.81m/s square. How long is it in the air ?
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A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 4.626 liters when the pressure was 0.983 atm and the temperature was 27.2 °C. The pressure was readjusted to 1.388 atm by moving the piston. What was the vol
An electric dipole p makes an angle of 30° with a uniform electric field of magnitude 300 N/C. If the torque on the dipole is 3.00 × 10-12 N · m then calculate the magnitude of the dipole moment p.
Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
In a coffee-cup calorimeter, 1.70 g of NH4NO3 is mixed with 79.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.67°C. Assuming the solution has a heat
Suppose a 64-kg boy and a 48-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
How many moles of sodium phosphate are required to react completely with 4.6 mol of calcium nitrate to form sodium nitrate and calcium phosphate?
A superhero flies 156 m from the top of a tall building at an angle of 35 ? below the horizontal. What is the vertical component of the super-hero's displacement?
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