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g100num [7]
3 years ago
8

If there are 0.5 amps of current running through a circuit using a 9-volt battery, what is the resistance of the circuit?

Physics
1 answer:
DIA [1.3K]3 years ago
8 0

Answer:

18

Explanation:  

<em>V = voltage </em>

<em>I = current  </em>

<em>R = resistance</em>  

V = IR is the equation to find out the Voltage of an item so if we move around the equation so we are trying to resistance it would become R = V/I.  

V = IR  

R = V/I  

R = 9/0.5  

<u>R = </u><em><u>18</u></em>

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Explain why it takes much more effort to
natali 33 [55]

Answer:

Mass Kinetic Energy and Jules

Explanation:

The train in question is  big and heavy and a car is decently heavy but say a train moving at 55 mph can plow through a car and a car driving at 55mph driving at a train will be stopped dead in its tracks. This is because newtons laws of motion specifically an object in motion will stay in motion unless its opposed. The train also has a payload behind it meaning it hurts with force while a car doesn't have to much mass behind it. The train takes loner to stop for as it's acceleration as well as it's deceleration are very slow because its huge and takes a lot of force to stop it while a car is very centralized and compact when it comes to weight and its brakes are usually effective at stopping at 55 mph in about 2 to 6 seconds while a train might stay moving for a good 35 seconds. The force behind the train is immense for as even if the wheels don't spin at all the train will still move since the force behind it is great and a cars tires have a lot of grip and not a lot mass which plays into the force the car has so it can stop simply.

6 0
3 years ago
Suppose a rocket launches with an acceleration of 34.0 m/s2 what is the apparent weight of an 85-kg astronaut aboard this rocket
docker41 [41]

Answer:

the apparent weight of the astronaut in the rocket is 3723 N.

Given:

acceleration = 34 \frac{m}{s^{2} }

mass of astronaut = 85 kg

To find:

Apparent weight of the astronaut = ?

Solution:

Total weight of the astronaut in a rocket is given by,

W = w + F

W = apparent weight of the astronaut

w = weight of astronaut on earth surface = mg

F = force acting on the astronaut = ma

W = mg+ma

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W = 85 (9.8 + 34)

W = 3723 N

Thus, the apparent weight of the astronaut in the rocket is 3723 N.

7 0
3 years ago
Read 2 more answers
Which is an example of something heated by conduction
hodyreva [135]
An example would be a pot on a stove. The radiation from the source of the heat (the stove) would make the handle hot by conduction from heat through contact.

Another example could be a metal spoon in a hot cup of coffee. The coffee itself is hot, but since the spoon is in the coffee and making contact, part of the spoon will become hot from the radiation of the source of heat (the hot coffee). Thus, conduction.
5 0
3 years ago
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stepan [7]

Answer:

1. Speed

Explanation:

"how far an object moves in a certain amount of time"

"how far an object moves"- <em>distance</em>

"In a " - <em>over</em>

"certain amount of time" - <em>time</em>

<em>Distance over time is speed. </em>

The speed of an object is the distance the object travels in one unit of time.

<em>Hope I Helped, Feel free to ask any questions to clarify :)</em>

<em>Have great day!</em>

<em>            -Aadi x</em>

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It should be gown, mask, gloves, and then goggles!
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