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Tema [17]
3 years ago
9

Convert 3 hours 21 minutes to decimal hours.

Physics
1 answer:
Oxana [17]3 years ago
7 0

Total hours is 3.35 hours

<u>Explanation:</u>

Given:

convert 3 hours 21 minutes to decimal hours

We know:

1 hour = 60 minutes

and

1 minute = 60 seconds

1 minute = 1 / 60 hours

So,

21 minutes = \frac{21}{60} hours

                  = 0.35 hours

Total hours would be = 3 hours + 0.35 hours

                                    = 3.35 hours

Therefore, total hours is 3.35 hours

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If five joules were required to move a crate in 3.7 seconds, what power was applied?
AleksAgata [21]

Answer:

The answer to your question is 1.35 Watts

Explanation:

Data

Work = W = 5 J

time = t = 3.7 s

Power = P = ?

Formula

Power is a rate in which work is done or energy is transferred over time

P = \frac{W}{t}

Substitution

P = \frac{5}{3.7}

Result

P = 1.35 W

8 0
3 years ago
A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the stri
san4es73 [151]

Answer:

T = 8.55 N

Explanation:

When string makes an angle 40 degree with the vertical then it will have two forces on it

1) gravitational force (mg)

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now we know that net force towards the center of the path is known as centripetal force and it is given as

T - mg cos40 = F_c

T - (0.40\times 9.8)cos40 = \frac{mv^2}{L}

T = 3 + \frac{0.40\times 5^2}{1.8}

T = 3 + 5.55

T = 8.55 N

6 0
3 years ago
Ultraviolet waves are ________.
Vitek1552 [10]
The answer to this would be C
3 0
3 years ago
A sprinter can go from a state of resting to running at 7 m/s in just 3 seconds. What is the sprinter's average acceleration?
liberstina [14]
The formula for this equation is:
change in velocity/time taken = acceleration

7/3 = 2.3...

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4 0
3 years ago
An unbalanced force of 500 N is applied to a 75 kg abject.
Hunter-Best [27]

Answer:

Brainly.com

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Middle School Physics 5 points

taybraidz

Asked 10.01.2018

An unbalanced force of 500 N is applied to a 75 kg object. What is the acceleration of the object?

See answers (2)

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Answer

0

aachen

aachen

Answer:

Acceleration, a=6.66\ m/s^2

Explanation:

Given that,

Force acting on the object, F = 500 N

Mass of the object, m = 75 kg

We need to find the acceleration of the object. The force acting on the object is given by :

a=\dfrac{F}{m}

a=\dfrac{500\ N}{75\ kg}

a=6.66\ m/s^2

So, the acceleration of the object is 6.66\ m/s^2. Hence, this is the required solution.

8 0
3 years ago
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