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4 years ago

The cushion is picked up and put on the couch. A work is being done. B no work is being done

Physics

2 answers:

Goshia [24]4 years ago

5 0

Work is being done because picking up a cushion and putting it somewhere is the motion of doing something (work).

aleksklad [387]4 years ago

4 0

Hello there.

<span>The cushion is picked up and put on the couch. A work is being done. B no work is being done

Option (A)</span>

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What is the magnitude of a the vertical electric field that will balance the weight of a plastic sphere of mass that has been ch

Lyrx [107]

Answer:

Explanation:

Let E be the strength of electric field and m be the mass of plastic sphere.

charge on plastic sphere, q = - 3 n C = - 3 x 10^-9 C

The force due to electric field on the charged plastic sphere = q E

The weight of the plastic sphere = m g

where, g is the acceleration due to gravity.

Now the force due to electrostatic field is balanced by teh weight of the plastic sphere.

q E = m g

E = m g / q

E = m x 9.8 / (3 x 10^-9) = 3.26 x 10^9 x m

Substitute the value of m and get the value E.

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3 years ago

What is a disruption or change that is happening to the body that causes it to sweat ?

ivann1987 [24]

Answer:

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4 years ago

What is the difference between mass and weight?

yuradex [85]

The answer is definitely A

8 0

3 years ago

Particles q1 = -53.0 uc, q2 = +105 uc, and

Nimfa-mama [501]

Answer:

$-180.38\ \text{N}$

Explanation:

$q_1=-53\ \mu\text{C}$

$q_2=105\ \mu\text{C}$

$q_3=-88\ \mu\text{C}$

r = Distance between the charges

$r_{12}=0.5\ \text{m}$

$r_{23}=0.95\ \text{m}$

$r_{13}=1.45\ \text{m}$

k = Coulomb constant = $9\times 10^9\ \text{Nm}^2/\text{C}^2$

Net force is given by

$F=F_{12}+F_{13}\\\Rightarrow F=\dfrac{kq_1q_2}{r_{12}^2}+\dfrac{kq_1q_3}{r_{13}^2}\\\Rightarrow F=kq_1(\dfrac{q_2}{r_{12}^2}+\dfrac{q_3}{r_{13}^2})\\\Rightarrow F=9\times 10^9\times (-53\times 10^{-6})(\dfrac{105\times 10^{-6}}{0.5^2}+\dfrac{-88\times 10^{-6}}{1.45^2})\\\Rightarrow F=-180.38\ \text{N}$

The force on the particle $q_1$ is $-180.38\ \text{N}$ .

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3 years ago

Please help me! It’s due soon! Please help!

Murrr4er [49]

Answer:

do it yourself lazy h.e

Explanation:

kysc lazy btc

4 0

3 years ago