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zlopas [31]
3 years ago
9

You push a box with a force of 80 n. if the net force on the box is 50 n, what is the force on the box due to sliding friction?

your answer
Physics
1 answer:
Elodia [21]3 years ago
3 0

The force of the sliding friction is 30 N.

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What is the difference between balanced forces and action-reaction forces​
Free_Kalibri [48]

when a number of force acting on a body doesn't changes its motion it is called balanced force

6 0
3 years ago
A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity α = 0.
alisha [4.7K]

To solve this problem we will apply the concepts related to resistance as a function of temperature, product of the relationship between the squared voltage and the power. Mathematically this is,

R = \frac{v^2}{P}

Here,

R = Resistance (At function of temperature)

v = Voltage

P = Power

Then we have,

R at 140°C (7 times room temperature),

R(140\°C) = \frac{125^2}{7.5}

R(140\°C) = 2083.33\Omega

The relationship between normal temperature and increased temperature would then be given by,

R(140\°C) = R(20\°C)(1 +\alpha (\Delta T))

R(140\°C) = R(20\°C)(1+(4.5*10^{-3})(140-20))

R(20\°C) = \frac{2083.33}{1.54}

R(20\°C) = 1352.81\Omega

Therefore the correct value of the group of answer is 1350

5 0
3 years ago
You need to purchase a motor to supply 400 joules [J] in 10 seconds [s]. All of the motors you can choose from are 80% efficient
kondor19780726 [428]

Answer:

32 W.

Explanation:

Power: This can be defined as the ratio of energy to time. The S.I unit of power is watt(W). The formula for power is given as,

P = W/t.................... Equation 1

Where P = power, W = work done, t = time.

Given: W = 400 J, t = 10 s.

Substitute into equation 1

P = 400/10

P = 40 W.

If the motors that is choose is 80% efficient,

P' = P(0.8)

Where P' = minimum power

P' = 40(0.8)

P' = 32 W.

5 0
3 years ago
I need help with this answer
ololo11 [35]
The answer is Synthesis
7 0
3 years ago
Pls help‼️‼️I have no idea how to solve this question... Can someone pls help! :(
sdas [7]

Answer: Its dragon ball bro

Explanation: (To Ship Leesoo) "My name is Twenty-Fifth Baam. For short you can just call me Baam. Even if you tell me to introduce myself, there's not much to say. I don't have parents... or a home... a single set of dirty clothes is all I have. I always thought that I might die alone without ever being able to do anything... But now- I have friends. Thank you."[45]

(Response when put in a danger of death situation) "There is something I fear more than death."[46][47]

(To Androssi Zahard) "The heart moves where the heart wills."[48]

(To Yu Han Sung) "If Rachel isn't up there, that place is nothing more than a pile of garbage. No matter what's up there, that won't change. You told me that being like I am is strange, but to me, you're a person who can't even find a single thing that's precious within that huge pile of garbage."[49]

(To Androssi Zahard) "If I must fight, I will fight to protect what is precious to me."[48]

(To Hwa Ryun) "What's this rising emotion from my heart... I'm not sure... I have to find out...! Why... Rachel... betrayed... ME...!!"[50]

PART II

7 0
4 years ago
Read 2 more answers
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