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which of the following is contained in a pull start lawnmower?
question 20 options:
a pulley and a wheel and axle
a wheel and axle and an inclined plane
a pulley and a wedge
a wheel and axle and a block and tackle

What is the temperature in degrees celsius of a substance with a tempature of 49k

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.