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brilliants [131]
3 years ago
15

Until a train is a safe distance from the station, it must travel at 5 m/s. Once ti

Physics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

60

Explanation:

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baseball pitcher throws a baseball, which has a mass of 0.145 kg, at a speed of 153 km/h. What is the kinetic energy of the base
lutik1710 [3]

Answer:

130.953 J

Explanation:

KE=1/2m*v^2

8 0
3 years ago
The earliest known records describing electric charge involve the use of _____.
blondinia [14]
Amber is the answer to this question
5 0
3 years ago
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Which of the following would notbe taken into consideration when describing the quality of a sound? A.The frequency of the overt
Natalija [7]
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4 years ago
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You are performing an experiment that requires the highest possible energy density in the interior of a very long solenoid. Whic
Alinara [238K]

Answer:

b. increasing the number of turns per unit length on the solenoid

e. increasing the current in the solenoid

Explanation:

As we know that energy density depends on the strength of the magnetic field. The magnetic field strength depends on the no of turns of the solenoid and the current passing through it. The greater the number of turns per unit length, greater the current passing through it, more stronger the magnetic field is. As

B = μ₀nI

n = no of turns

I = current through the wire

So the right options are

b. increasing the number of turns per unit length on the solenoid

e. increasing the current in the solenoid

5 0
4 years ago
Which radiation has no electric charge associated with it?
joja [24]

Answer:

Gamma radiation

Explanation:

There are three types of ionizing radiation:

- Alpha radiation: it consists of alpha particles, which are nuclei of helium (so, they contain 2 protons and 2 neutron) --> therefore, they have a net charge of +2 (given by the positive charge of the two electrons)

- Beta radiation: it consists of electron (in case of beta-minus radiation) or positrons (in case of beta-plus radiation). Therefore, in both cases the radiation is electrically charged: charge -e for the electrons, charge +e for the positrons

- Gamma radiation: it consists of high-energy photons. Since photons are electrically neutral, gamma radiation has no electric charge associated with it.

3 0
3 years ago
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