2 years ago

There are three known forms of uranium. These forms are called _____ of each other.

Physics

1 answer:

otez555 [7]2 years ago

3 0

Answer:

A. Isotopes

Explanation:

The answer is isotopes. Isotopes are different kind of atoms of the same element.

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A 10- kilogram block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N. The

Temka [501]

Answer:

$1m/s^2$

Explanation:

Mass of block=10 kg

Applied horizontal force =F=20 N

Friction force=f=10 N

We have to find the acceleration of block.

Net force=Applied horizontal force-friction force

$ma=F-f$

Where F= Horizontal force

f=Friction force

m=Mass of object

a=Acceleration of object

$10a=20-10=10$

$a=\frac{10}{10}=1 m/s^2$

Hence, the acceleration of the block= $1m/s^2$

4 0

2 years ago

If it takes a force of 20n to stretch a spring 0.1 meter how much energy does the spring have?

V125BC [204]

Answer:

The energy stored in the spring would be 1 joule.

Explanation:

hope that helps?

8 0

2 years ago

6.6 kg block initially at rest is pulled to theright along a horizontal, frictionless surfaceby a constant, horizontal force of

neonofarm [45]

Answer:

v = 3.04 m/s

Explanation:

given,

mass of the block, M = 6.6 Kg

horizontal force, F = 12.2 N

distance, L = 2.5 m

initial speed = 0 m/s

speed of the block,v = ?

we now

Work done is equal to change in Kinetic energy.

Work done = Force x displacement

W = Δ K E

Δ K E = Force x displacement

$\dfrac{1}{2}mv^2 - \dfrac{1}{2}mu^2= F .s$

$\dfrac{1}{2}\times 6.6 \times v^2 - 0= 12.2\times 2.5$

3.3 v² = 30.5

v² = 9.242

v = 3.04 m/s

speed of the block is equal to 3.04 m/s

4 0

2 years ago

When you do work on an object some of your energy is ____ to that object

HACTEHA [7]

Maybe the word could be converted?

8 0

2 years ago

Which of the following statements best describes the second law of

Serga [27]

Answer:

Explanation:

Heat flows from hot to cold to lower the temperature of hot areas and increase temperature of cold areas. The end result is that the 2 areas have the same temperature, thus increasing entropy.

7 0

3 years ago