Which type of chemical reaction needs to absorb energy to proceed

A scientist observes debris added to a landform from a melting glacier. This is evidence for which type of natural process? Physical weathering Chemical Weathering Erosion Deposition

According to newton's first law, if a body is moving in the absence of any net external force, decribe the continuing motion of the object

Calculate the force of friction that keeps an 80-kg person sitting on the edge of a horizontal rotating platform when the person sits 2 m from the center of the platform and has a tangential speed of 3 m/s.

Which of the following will increase the force of gravity between two charged objects without affecting the electric force? A. Increasing the distance between the objects B. Increasing the charge of both objects C.

What is the impact of adding more light bulbs in parallel?

A glass window is a clear object that light passes through as it travels in a straight line. This is a good example of A. refraction of light. B. transmission of light. C. absorption of light. D. reflection of light.

Why is net force a vector sum A. All forces have direction and magnitude B. Forces can only be attractive C. All forces are contact forces D. There are four fundamental forces

Does the elf owl's small size allow it to live in cacti

If grapefruit juice has a ph of 3.0 and egg white have a ph of 8.0, which contains more h + ions? how many more?

Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. What is the wavelength,? Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e.