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2 years ago

1.A heater supplies 500kj (500,000J) over 10 minutes.

Physics

1 answer:

ohaa [14]2 years ago

4 0

Umm... I think I saw this question somewhere else answered.... You should look for it.

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What weights more: 2g aluminum or 2g water?

Step2247 [10]

They both weigh the same. Since they both weigh 2g :)

7 0

3 years ago

Read 2 more answers

a 3-newton force and a 4-newton force are acting concurrently on a point. which force could not produce equilibrium with these t

Paladinen [302]

A force that cannot produce equilibrium with these two forces must be less than 7 N or greater 7 N.

The given parameters;

3 Newton force
4 Newton force

A body is said to be in equilibrium state when the net force on the body is zero.

A force that produce equilibrium among two forces acting concurrently is known as equilibrant force. This force is usually equal to sum of the two concurrent forces.

$F_1 + F_2 = F_3$

where;

F₁ and F₂ are the concurrent forces
F₃ is the equilibrant force

From the given parameters;

$F_1 + F_2 = 3 \ N + 4\ N = 7\ N$

Thus, a force that cannot produce equilibrium with these two forces must be less than 7 N or greater 7 N.

Learn more here:brainly.com/question/12582625

7 0

1 year ago

What force is needed to accelerate an object 5 m/s^2 if the object has a mass of 10kg?

RUDIKE [14]

It is important to pay attention to the fundamental units in the given information of physics problems; if you carefully arrange a system so the units cancel out appropriately, the answer is usually correct.

Force is mass x acceleration, and the units of force are (Kg/m·s²). In this system, a 10 Kg system is accelerated by 5 m/s². Simply multiply:
10 Kg x 5 m/s² = 50 Kg·m/s² = 50 Newtons

4 0

2 years ago

The distance from earth to the center of our galaxy is about 27,000 ly (1 ly = 1 light year = 9.47 × 10^15 m), as measured by an

kompoz [17]

Answer:

The time is 1206 years.

Explanation:

Given that,

Distance = 27000 ly

$1\ ly =9.47\times10^{15}\ m$

Speed = 0.9990c

We need to calculate the time

Using formula of speed

$v = \dfrac{d}{t}$

$t=\dfrac{d}{v}$

Put the value into the formula

$t =\dfrac{27000\times9.47\times10^{15}}{3\times10^{8}}$

$t=8.523\times10^{11}\ sec$

We need to calculate the time dilation the clock on the spaceship

Using formula of dilation time

$t'=t\sqrt{1-\dfrac{v^2}{c^2}}$

$t'=8.523\times10^{11}\times\sqrt{1-\dfrac{( 0.9990c)^2}{c^2}}$

$t'=8.523\times10^{11}\times\sqrt{1-(0.9990)^2}$

$t'=3.8106\times10^{10}\ sec$

The time convert in years

We know that,

$1\ yr= 3.16\times10^{7}\ sec$

So, the time is

$t'=\dfrac{3.8106\times10^{10}}{3.16\times10^{7}}$

$t'=1206\ years$

Hence, The time is 1206 years.

8 0

3 years ago

_______ is a liquid that absorbs and releases thermal energy.

gogolik [260]

Answer:

<h2>Refrigerator is a liquid or substance that absorbs and releases thermal energy.</h2>

Explanation:

Refrigerator creates liquid by increasing the pressure of the refrigerator vapor inside and forcing them outside the refrigerator into the coils.
This is the process which leads to the conversion of the hot gas in the refrigerator coils into liquid form.
The liquid form of the refrigerator subsequently absorbs the heat that is created inside the refrigerator thereby cooling the air inside and releasing thermal energy in the process.

4 0

2 years ago