How far will 490j of work raise a block weighing 7n

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

What causes the formation of ocean currents?

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )