When 49.5 J of heat was transferred to 7.3 g iron at 22°C, the temperature of iron increases to 37°C. What is the specific heat of iron in J/g∙°C?

If you drive at an average speed of 54 mph for the first 41 minutes of your trip and then drive at an average speed of 59 mph for the next 52 minutes how many miles did you drive total?

If you were doing a research study on sleep and student achievement, which of the following might be the hypothesis? O A. Students get enough sleep to be effective. O B. Memory is affected for students. O C. Achievement isn't dependent upon sleep.

An 80 kilogram skier slides on waxed skis along a horizontal surface of snow at a constant velocity while pushing with his poles. What is the horizontal component of the force pushing him forward?

Determine the speed of sound in air at 700 K. Also determine the Mach number of an aircraft moving in the air at a velocity of 340 m/s. The gas constant of air is R = 0.287 kJ/kg·K. Its specific heat ratio at room temperature is k = 1.4.

What does Astronomy mean?

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?