How much heat energy (in megajoules) is needed to convert 7 kilograms of ice at - 9 degrees Celsius to water at 0 degrees Celsius?

A) 3.09 MJ

B) 2.13 MJ

C) 2.48 MJ

D) 3.26 MJ

According to the diagram shown on the right, how does energy flow in an ecosystem? A. Energy flows from producers to the Sun and from producers to consumers. B Energy flows directly from the Sun to both producers and consumers.

An object that gives off electromagnetic waves based on it's temperature demonstrates which phenomenon

How might the climate be affected if you were people drove automobiles and more people road bikes or use public transportation like buses or trains

Ultraviolet light from a distant star is traveling at 3.0 * 108 m/s. How long will it take for the light to reach Earth if it must travel 4.0 * 1013 km?

When clouds typically produce precipitation and why?

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?