What is the main way that scientists determine which conditions can support life

A guitar string is plucked. What best describes the formation and transmission of the sound wave? The string vibrates the surrounding air, which produces a transverse wave. The string vibrates the surrounding air, which produces a longitudinal wave.

Which weathering process is mechanical

How many grams are there in 1.5 kilograms

A moving walkway has a speed of 0.4 m/s to the east. A Stationary observer sees a man walking on the walkway with a velocity of 0.3 m/s to the east. What is the man's velocity relative to the moving walkway?

If the resistivity of copper is less than that of gold at room temperature, which of the following statements must be true? Gold has a higher resistance than copper. The sample of gold is thinner than the sample of copper.

Which process causes wells on land to become saline, making them unusable for drinking water? A. Erosion B. Echo sounding C. Eutrophication D. Groundwater infiltration

A farmer uses a tractor to pull a 150 kg bale of hay up a 15∘ incline to the barn at a steady 5.0 km/h. The coefficient of kinetic friction between the bale and the ramp is 0.40. Part A What is the tractor's power output?

Identify the conditions for an elastic collision in a closed system. Check all that apply. Energy is conserved. Velocities may change. Momentum is conserved. Kinetic energy is conserved. Objects stick together after the elastic collision.

When the velocity of a mass on a spring is zero, the acceleration is at

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.