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jek_recluse [69]
3 years ago
7

Tim is riding a bike at a velocity of 10m/s north. As he starts to climb a hill, his velocity decreases to 5 m/s north. Is the a

cceleration positive or negative? Calculate the acceleration.
Physics
1 answer:
ddd [48]3 years ago
3 0

Answer:

negative

Explanation:

He is decreasing acceleration. To calculate, imply do 10-5= 5, but since it is a decrease, we must say -5

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If a 6V battery is connected to a light bulb whose resistance is 55,000Ω How much current will flow in the circuit?
notka56 [123]

Answer:

Current, I = 0.000109 Amps

Explanation:

Given the following data;

Voltage = 6V

Resistance = 55,000 Ohms

To find the current flowing through the circuit;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

V = IR

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Making current the subject of formula, we have;

I = \frac {V}{R}

Substituting into the formula, we have;

I = \frac {6}{55000}

Current, I = 0.000109 Amps

5 0
3 years ago
The rock starts as a solid and then..
alina1380 [7]

Answer:

they stay a solid

Explanation:

breaks apart do to whether such as erosion

7 0
3 years ago
A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0. 2 meter. The ball travels 50 meters down t
Fed [463]
500 i think i’m wrong though
8 0
2 years ago
Which is the force of repulsion between two positively-charged particles?
klio [65]
<span> answer>>>>electric force <<<<by the way i don't like physics but i answer this for you ^-^</span>


<span>This is because centripetal force is just the net force of a circular motion. There are no attractive or repulsive forces here. This is not the case here. </span>
<span>The gravitational force is a force reliant on mass and attraction of the masses. There are attractive forces here, but not really repulsive forces. </span>
<span>The electric force is the only one that would make sense because it has to do with a relationship between charges and includes both repulsive and attractive forces.</span>
4 0
3 years ago
Read 2 more answers
Which one of the following is a derived Si unit a. Newton, b. Meter, c. Mole, d. Kiogram<br>​
Sever21 [200]

I think newton is the answer

4 0
3 years ago
Read 2 more answers
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