3 years ago

What work is the person doing doing to the box if the box is just being held and it is not moving?

Physics

1 answer:

kobusy [5.1K]3 years ago

7 0

Allowing for a platform in which the box holds potential energy

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A roller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4

Vera_Pavlovna [14]

Answer:

2as = v² - u²

v = √(2as + u²)

v = √(2 x 4 x 400 + 13²)

v = 58 m/s

Explanation:

8 0

3 years ago

Consider two positively charged particles, one of charge q₀ (particle 0) fixed at the origin, and another of charge q₁ (particle

docker41 [41]

Answer:

Explanation: according to Coulomb's inverse-square law is proportional to the square of distance between them and is given by

$F=k\frac{q_0q_1}{r^2}$

where r is the distance between the charges & k is the Coulomb's constant

k=1/(4*ε_0*π)

k=9*10^9

the distance between the charges in this question is d_1

hence the magnitude of the force exerted by q_0 on q_1 is given by

$F=k\frac{q_0q_1}{d_1^2}$

due to location of particle 1 above the particle 0 the direction of force is parallel to y axis and in vector form

$F=k\frac{q_0q_1}{d_1^2} j$

4 0

4 years ago

Please give an answer that is coherent

Semmy [17]

Answer:

480

Explanation:

resistance equals to potential difference divide by electric current

120÷0.25

=480

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3 years ago

Para que el calor sea transmitido por conducción los cuerpos deben tocarse?<br> verdadero o falso

dybincka [34]

Answer:

verdadero

Explanation:

Conducción:Es la más sencilla de entender, consiste en la transferencia de calor entre dos puntos de un cuerpo que se encuentran a diferente temperatura, sin que se produzca transferencia de materia entre ellos.

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The y-component of a projectile’s velocity is 12.1 m/s. When the projectile once again passes by the height from which it was la

Nat2105 [25]

It's 12.1 m/s, assuming that's the launch velocity that's given.
For projectile motion, velocity's y-component is parabolic/quadratic. It's x-component is constant, so you don't need to know it.

6 0

3 years ago