Answer:
17.78 m/s
Explanation:
Average speed is found by simply dividing the distance travelled by the time that it took to finish the trip. It's measured in meters per second (m/s), so first convert the quantities.
1 km = 1000 m, so 16 km is 16000 m
0.25 hours is 15 minutes. Since 1 minute is 60 seconds, then 15 minutes must be 900 seconds.
Thus:
average speed = total distance/total time = 16000 m / 900 s = 17.78 m/s
Hope this helps!
Brainliest please!
The smallest time interval in which the magnetic field can be turned on or off to induced the emf is 47.5 s.
<h3>
Emf induced in the coil</h3>
The emf induced in the coil is calculated as follows;
emf = dФ/dt
where;
- dФ is change in flux
- dt is change in time
0.12 = 5.7/dt
dt = 5.7/0.12
dt = 47.5 s
Thus, the smallest time interval in which the magnetic field can be turned on or off to induced the emf is 47.5 s.
Learn more about emf here: brainly.com/question/13744192
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Answer:
Explanation:
A lot. That's why he was one of Boston's star hitters.
m = 0.15 kg
a = 3.0 * 10^4
F = ?
F = 0.15 * 3*10^4
F = 0.45 * 10^4
F = 4.5 * 10^3 Newtons
You should always express scientific notation as a number between 1 and 10 or 1 < x < 10. The power will determine the exact value of the number expressed as a scientific notation.
It is a chemical change and a physical change
Neutrons < Cosmic radiation < Gamma rays < beta particles < Alpha particles
Explanation:
Alpha particles are the most energetic of the nuclear radiations produced in nuclear reactions.
Neutrons are radiations with no charges on them. They are the lowest radiation in terms of energy.
Cosmic radiation are energetic radiations usually produced when solar radiation interacts with the atmosphere.
Gamma ray is a form of electromagnetic radiation with no mass and charge.
Beta particles are of two types. The negative and positive beta particles. Negative beta particles are called negatrons and they carry negative charges while positrons carry positive charges.
Alpha particles are similar to Helium atom,they are the most energetic of all the radiations.
Learn more:
Radiation brainly.com/question/9077368
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