carolinemm

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need help in physics and math (pre-calculus and trig) pretty good at bio and history

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Solve each equation for 0 degrees is less than or equal to x is less than or equal to 180 degrees. 1. 2sin2X - 1 =0 2. cosX = 3cosX - 2 3. tanXx = sinX 4. cosXsin2X = 0 5. secX = 1 +tanX 6. 4sin2X - 4sinX + 1 = 0 7. sin2X = 2cosX 8. tan2X + tanX = 0 9. 2sin2X = 1 10. cos2X + sinX = 1

Solving Equations trigonometry precalculus Solve each equation for 0 degrees is less than or equal to x is less than or equal to 180 degrees

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Solve each equation for all values of "x" 1. 2sin2x - 5sinx + 2 = 0 2. sin2x - 2sinx - 3 = 0 3. 3cos2x - 5cosx = 1 4. 2tanxcosx + 2cosx = tanx +1

Solving Equations trigonometry precalculus

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210-85 A well has water 20.0m down from ground level. How much power must a motor supply to a pump if it is to raise 180 liters (180 X 10-3m3) of water per minute to the surface? The density of water (mass per unitle volume) is (1.00 X 103kg/m).

physics power density

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210-79 A runner traverses a 50m long strethc on a horizantal track in 10s at a farily constant speed. All the while seh experiences a retarding force of 1.0N due to air friction. What power was developed in overcoming that friction?

physics power

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210-83 If a projectile has a mass of 0.5g and is traveling at 200km/s, how much power would be provided to the target if the collision lasted 10ns?

physics power

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210-81 the per captia power consumption in teh US is around 10kJ each and every second. At what speed would you have to push a car exerting a force of 1.0kN on it all year, day in and out, to be equicalent to your share?

physics power

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209-59 What is the kinetic energy of a 10.0-kg piece of concrete after it has fallen for 2.00s fromt the facade of an old building?

physics mechanical energy

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209-61 Two automobiles of weight 7.12kN and 14.24kN are traveling along horizontally at 96 km/h when they both run out of gas. Luckily, there is a twon in a valley not far off, but it's just beyond a 33.5m high hill. Assuming that fricition can be neglected, whihc of the cars will make it to town? [Hint: KEf +PEGf = KEin + PEGin]

physics mechanical energy

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209-63 A kid in a wagon is traveling at 10m/s just as she reaches the botton of a hill and begins to climb a second hill. How high up it will she get before the wagon stops, assuming negligible friction losses?

physics mechanical energy

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209-65 An athlete whose mass is 55.0kg steps off a 10.0m high platform and drops onto a trampoline, which, while stretching, brings her to a stop 1.00m above ground. Assuming no losses, how much energy must have momentarily been stored in the trampoline as she came to rest? How high will she rise?

physics mechanical energy

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