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vlada-n [284]
3 years ago
5

A 45.0 kg student runs at a constant velocity up the incline 6 metres high. If the power output of the student is 1.50 x 103 W,

how long does it take the student to run the 9.0 m along the incline?
Physics
1 answer:
serg [7]3 years ago
3 0

Answer:

The time taken is 1.76 s.

Explanation:

mass of student, m = 45 kg

height, h = 6 m

power, P = 1500 W

Power is defined as the rate of doing work.

Work done in moving height is

W = m g h

Let the time is t.

P = m g h / t

1500 = 45 x 9.8 x 6 / t

t = 1.76 s

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speed of sound is 343 Ms at 20 degrees Celsius. The frequency heard from the sound is 256 Hz. what is the sounds wavelength?
Lina20 [59]
S= 343m/s
F=256Hz

WL= 343ms/256-1
WL=V/F

 = 1.339844m     
7 0
3 years ago
If a dog is accelerating at a constant rate of 6.57 m/s2, what is the mass of the dog if 25 N of force is being applied to it?
Oliga [24]

Answer:

<h3>The answer is 3.81 kg</h3>

Explanation:

The mass of the dog can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{25}{6.57}  \\  = 3.80517503

We have the final answer as

<h3>3.81 kg</h3>

Hope this helps you

8 0
3 years ago
Help please ! Ill give brainliest !! ☁️✨
KATRIN_1 [288]
Answer:
Force Meter > used to measure force
Milli > Prefix that means 1/1,000
Centi > Prefix that means 1/100
Kilo > Prefixes that means 1,000
Thermometer > used to measure Temperature


Explanation: uh just trust
3 0
3 years ago
. How do you think altering factors like wavelength and frequency affect they way we see and hear? How does this help us underst
sergij07 [2.7K]
Wavelength and frequency are directly related to one another. Low frequency but high wavelength signals tend to be easier to detect. Examples of these signals are the radio waves.

I hope my answer has come to your help. God bless and have a nice day ahead.
3 0
3 years ago
Read 2 more answers
I NEED SOMEOME TO HELP MEEEE NOWWWW I WILL GIVE YOU. 75 POINTSSSS
nirvana33 [79]
Hold on I’m working on it Rn
5 0
3 years ago
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