Is radioactivity on the Earth something relatively new?

A femur was found in a shallow grave. The length of the femur is 45 cm. Which best describes the height of the victim?

Explain 2 reasons it is wise to use energy-efficient electric appliances.

Is there a buoyant force on an object at the bottom of the ocean

I don't understand the physics work power and energy unit

Show that 1.0 m/s = 3.6 km/h. Hint: Show the explicit steps involved in converting 1.0 m/s = 3.6 km/h.

What fuel (s) are the main energy source during short, intense bursts of exercise? Metabolism of protein only Metabolism of fat only Metabolism of carbohydrate only Carbohydrates and vitamins Caffeine Medium-chain triglycerides Erythropoietin

A man of mass 60kg climbs up a 20m long staircase to the top of building 10m high. What is the work done by him

A student, standing on a scale in an elevator at rest, sees that his weight is 840 n. as the elevator rises, his weight increases to 1050 n, then returns to normal.

Which of the following actions or events did not contribute to the Dust Bowl? Farmers in the Central U. S. had plowed grasslands to grow food crops to feed the increasing human population.

Why heat capacity for polymer higher than metal?