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sergejj [24]
3 years ago
7

Grade 10 My smart Physics people help me with this review question please

Physics
1 answer:
Kaylis [27]3 years ago
3 0

Answer: a = 1, b = 9, c = 6, d = 4

Explanation:

With no velocity, total mechanical energy is all gravity potential energy

PE = mgh = 80.0(9.81)(25) = 19,620 J = 1.96e4 J

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Electromagnetic spectrum, i need help putting them in order. And maybe get a little help understanding this subject
umka2103 [35]

Explanation:

In order from highest to lowest energies the parts of electromagnetic spectrum are named as

Gamma rays,

X-rays,

ultraviolet radiation,

visible light,

infrared radiation,

and radio waves.

Microwaves are a subsections of radio waves. They are used in microwave ovens to heat the food items.

This is expected EM spectrum in field of science.

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3 years ago
Electrical shock is more likely to be fatal when the path of current is through the
skad [1K]
Electrical shock is most likely to be fatal when the path of the current is through the heart.
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3 years ago
An electric heater carries a current of 13.5 A when operating at a voltage of 120V . What is the resistance of the heater?
Aloiza [94]

An electric heater that carries a current of 13.5 A when operating at a voltage of 120V , will have  the resistance of the heater as 8.89 ohm.

<h3>What is Ohm's law?</h3>

Ohm's law  can be described as the law in physics that   focus on how voltage or potential difference between two points is directly proportional to the current or electricity that is moving in the direction of the resistance.

An this is also  directly proportional to the resistance of the circuit, hence it can be calculated using the Ohm's law is V=IR.

from V=IR

R=V/I

= 120/13.55

=8.89 ohm.

Therefore,  electric heater that carries a current of 13.5 A when operating at a voltage of 120V , will have  the resistance of the heater as 8.89 ohm.

Learn more about ohms law on:

brainly.com/question/231741

#SPJ4

4 0
1 year ago
A bicycle rider travels 50.0 km in 2.5 hours. What is his average speed?
ycow [4]
50km / 2.5 = 20 km per hour
4 0
4 years ago
An unknown noise is generated in a building. Sound waves move toward an open doorway. Waves of which wavelength would diffract t
nadezda [96]
<span>The answer is 15 centimeters. The waves with the smallest wavelengths (also highest frequency) have the least capacity to diffract around objects hence have a shadowing effect, behind the object, especially if the wavelength is small compared to the object. This is also the reason why high-frequency electromagnetic waves do not have a good reach in mountainous regions. </span>




6 0
3 years ago
Read 2 more answers
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