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A 0.482-kg toy car is powered by one D cell (1.50 V) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 47.1%, meaning that 47.1% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.15 seconds, the car, which is initially at rest, reaches a speed of 2.89 m/s. What is the average current supplied to the car\'s motor.
the trial balance for k and j nursery inc. listed the following account balances at december 31 2013 the end of its
the p-value for a one-mean t-test is estimated using a t-table as 0.05 lt p lt 0.10. based on this information for what
if all cars in the usa ran with petrol blended with 20 bioethanol produced by enzymatic hydrolysis of cellulosic
1. suggest the most efficient capital structures for a manufacturing company and software development firm. support
when conducting a hypothesis test with chi-square analysis the null hypothesis is rejected when the differences between
firm h has the opportunity to engage in a transaction that will generate 100000 of cash flow and taxable income in year
you are trying to determine the wavelength of a particular line of a samples emission spectrum using a diffraction
1. if you deposit 220 in your savings account at the beginning of each month for 2 year and if your account bears 6 14
payout and retention ratio drekker inc. has revenues of 312766 costs of 220222 interest payment of 31477 and a tax rate
suppose that a particle accelerator is used to move two beams of particles in opposite directions. in a particular
If the string is 9.5 m long, has a mass of 45 g and is pulled taut with the tension of 8.0 N, how much time does it take for a wave to travel from one end of the string to the other.
A diving bell with interior air pressure equal to atmospheric pressure is submerged in Lake Michigan at a depth of 180.5 m. find the magnitude of the net force on the viewing port
The temperature near the surface of the earth is 310 K. A xenon atom (atomic mass = 131.29 u) has a kinetic energy equal to the average translational kinetic energy, how high up would it go before coming to rest
Two point charges are located on the y-axis as follows: one charge q1 = -1.85nC located at y=-0.585m , and a second charge q2 = 3.10nC at the origin (y=0). what is the direction of the total force
After catching the ball, Sarah throws it back to Julie. However, Sarah throws it too hard so it is over Julie's head when it reaches Julie's horizontal position. What is the speed of the ball when it leaves Sarah's hand
q1. youre driving down the highway late one night at 20 rm ms when a deer steps onto the road 35rm m in front of you.
Water is at rest at the bottom of a well of depth h = 7.82 m. A pump lifts mass at a rate of dm/dt = 119 kg/minute from the well and ejects it with a speed v = 3.74. m/s. find P, the power (energy per time) needed to do this work
a cell membrane has a surface area of 1.00 x 10-7 m2 a dielectric constant of 6.01 and a thickness of 7.76 nm. the
The water level in a vertical glass tube 1.300 m long can be adjusted to any position in the tube. What is the greatest depth of water for which there will be resonance in the air in the tube
question a student records the first 10 harmonics for a pipe. is it possible to determine whether the pipe is open or
The supersonic aircraft Concorde has a length of 63.0 when sitting on the ground on a typical day when the temperature is 16.0. What is the temperature of the Concorde's skin in flight
A crate pushed along the floor with velocity slides a distance after the pushing force is removed. what distance does the crate slide before stopping
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