Which of the following is an example of mechanical waves in nature?

A. radio

B. microwave

C. light

D. sound

A person's temperature is 40°C What would it be in Kelvin?

Case 1: your car is moving toward the west and the driver presses down on the gas pedal. You feel yourself being pressed back against the seat. During this instant, which direction is the car accelerating?

The significant feature of a Cepheid variable is that there is a relationship between two intrinsic parameters, one of which can be easily measured, while knowledge of the other parameter is required. These parameters are:

All of the following statemants about the earths atmosphere are true except: 1. The atmosphere contains all gases that surround the earth 2. The atmosphere has no effect on landforms, but does effect he biosphere 3.

How does and objects density determine whether the object will sink or float

Whats the core of electromagnet made of?

Ultraviolet light emits a total of 2.5 * 10^-17 J of light at a wavelength of 9.8 * 10^-7 m. How many photons does this correspond to?

3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposite surface at an angle of 900 to the normal. Calculate the i. angle of incidence. ii.

What would happen to the stratosphere if humans were to increase the amount of ozone within it?

The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous noise level that appears over a wide spectrum when viewed in the frequency domain. a. Trueb. False