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He gave 1/4 of them to Monica, then gave half of what was left to Michael, then gave 1/6 of what was left to Ingrid. He then had 20 gumdrops left. How many did he have originally?
A fire hose ejects a stream of water at an angle of 36.5 degrees above the horizontal. The water leaves the nozzle with a speed of 27.0 m/s. Assuming that the water behaves like a projectile, how fa
A biologist has two brine solutions, one containing 3% salt and another containing 12% salt. How many millimiters of each solution should he mix to obtain 1 L of a solution that contains 8.4% sa
About 7/10 of the U.S. Population in 1991 believed saying A to be true. What is the total population? About what percent of total population believed saying F to be true?
An airplane with a speed of 89.1 m/s is climbing upward at an angle of 48.4 ° with respect to the horizontal. When the plane's altitude is 548 m, the pilot releases a package. Relative to the gr
A child loses his balloon, which rises slowly into the sky. If the balloon is 14 cm in diameter when the child loses it, what is its diameter at the following altitudes? Assume that the balloon is v
Twenty five women did 1/5 of a job in 8 days. How many additional women needed to be added to the crew of 25 to accomplish this?
When a 2.50 kg object is hung vertically on a certain light spring described by hooke's law, the spring stretches 2.76 cm. What's the force constant of the spring?
A large cruise ship of mass 6.50 * 10^7 kg has a speed of 12.0 m/s at some instant. What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.50 km?
A proton has a velocity of 1.25 x 10^6 m/s. It travels into a magnetic field that has a strength of 1.5 T. What is the maximum force that the proton can experience?
The distance between the teams in second and third place is one-third that distance. How much farther ahead is the team in first place than the team in third?
A much smaller asteroid, of mass 930 kg, is in a circular orbit about the first at a distance of 256 meters as a result of their mutual gravitational attraction. What is the speed of the second aste
Subtracting 4 from the number of books Keisha read and dividing by 2 gives the number of books Sheldon. Sheldon read 10 books. How many books did Ben read?
What is the average power of the flywheel during this interval . First find the torque, and alpha.
What is the energy dissipated as heat by the resistor as the capacitor is charging?
Kee had to buy 2 tires and patch the tires on his bbike 3 times this year. How much did Kee spend repairing his bike if these were all the repairs he needed?
An electric car is designed to run off a bank of 12-V batteries with total energy storage of 3.0 × 107 J. If the electric motor draws 6000 W in moving the car at a steady speed of 10 m/s, how f
If an AC voltage of 120 V is across the primary coil, what will be the voltage on the secondary coil?
You will get paid 100,000 at the end of each year for the next 20 years. How much have you actually won? Assume an appropriate interest rate of 8%.
A parallel-plate capacitor has 1.85 cm2 plates that are separated by 5.72 mm with air between them. If a 12.0 V battery is connected to this capacitor, how much energy does it store?
An optical pin is placed midway between two parallel plane mirrors M1 and M2 which are 10cm apart. How far from the pin is the fourth image?
Assuming that the inductance has a value of 8 x 10^-7 H, determine the range of capacitance values that are needed so the antenna can pick up all the radio waves broadcasted by FM stations.
A laser emits a narrow beam of light. The radius of the beam is 1.5 mm, and the power is 2.9 mW. What is the intensity of the laser beam?
The team still has 45 games to play. How many of the remaning games must the team win in order to win 60% of all games played during the season?
The chandra satellite telescope orbits as much as 87,000 mile above Earth. This is about 1/3 of the distance of the distance to the moon. About how far away is the moon?