In one sentence, explain the relationship between velocity, speed, and acceleration

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Answer 1

Answer: Velocity consists of speed and direction combined, while speed is just the rate of movement, and acceleration is the change in velocity over time

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What measures the radiation given off by earth

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i thinkits an instrument called seismograph. not sure

Which of the following is not an example of potential energy? chemical energy, gravitational energy, thermal energy, nuclear energy

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Answer:

nuclear energy

Explanation:

A pendulum takes 0.5 second to complete one cycle. What is the pendulum’s period and frequency?

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That "0.5 second" that it takers to complete one cycle is the period.

Frequency = 1/period = 1/0.5 = 2 Hz.

The chemical formula for water, H2O, means that each water molecule contains

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2 hydrogen molecules and one oxygen molecule

How are both radio waves and microwaves used for methods of communication?

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Answer: Radio waves is a type for wave that is used to transmit television and radio programmes, while microwaves can be used for phone communication.

Explanation: Radio waves and microwaves are types of electromagnetic radiation that has the longest wavelengths and the lowest frequency and it carries the least amounts of energy. This causes it to interact with mostly nothing as it travels, therefore it is just easier to transmit information as there is no disturbance in the transmittion.

Radio waves and microwaves are types of electromagnetic radiation with the longest wavelengths, lowest frequency and carry the least amounts of energy. This causes it to interact with mostly nothing as it travels, therefore it is just easier to transmit information as there isn't any major disturbance in the transmittion. If it was any other type of radiation, the signal would be unclear and in most cases impossible to process.

why do you think accurate measurement of time became possible much after accurate measurement of length and mass

Answers

Accurate measurements of time become possible after accurate measurement of length and mass because time taken by a heavy body to move a certain distance is more,and time taken by a light body to move a certain distance is less.

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1.) Properties of a compound are_____the properties of the elements that make them up.2.)Compounds form as a result of a______

What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s?50 Hz200 Hz0.5 Hz10 Hz

How are electromagnets made and how do they work?

You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30 degrees c to 36 degrees c. what is the velocity if the sound wave at this new temperature?