Uranium 235 can be split if it is hit by: a neutron a proton an electron a neutrino

Answers

Answer 1

Answer: if splitting uranium 234, it's nuclear fission, right?
so neutron

Answer 2

Answer:

this answer for this is neutron

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Similar poles of bar magnets attract each other.
True
False

Answers

(False) similar poles repel and opposite poles attract each other.

A large container of water is sitting on a balance. The weight of the container plus the water is 10 newtons. An object the weight of 7 newtons hanging from a forcemeter is lowered towards the surface of the water . what reading on the force meter would you expect?

Answers

Answer:

Explanation:

Note that when an object is immersed in water it weighs less.

This means the weight seen is the apparent weight.

Now in water there is upthrust and is a counter force acting on the object and this force is opposite to the weight of the fluid alongside the container 10N

The apparent weight is the real weight - the upthrust

7N-10 = -3N

The essence of the negative sign is to show that this force is acting in opposite direction to the weight.

Note: the upthrust is 10N and it's opposite to the weight of the fluid and the tube on which the object on the force meter is subjected to.

An object having a net charge of 28.0 µC is placed in a uniform electric field of 660 N/C that is directed vertically. What is the mass of this object if it "floats" in the field?(Hint: If an object "floats" consider what this means for the sum of the forces acting on it.)

Answers

Answer:

The mass of this object is $\mathbf{1.71*10^(-3)\,kg}$

Explanation:

If an object floats, it means by Newton’s second law that the sum of the forces acting on it are equal to zero because it’s at rest, as you can see on the figure below, the only two forces acting on the charged particle are the weight (W) and the electric force (Fe) due the electric field (E), so Newton’s second law in this case is:

$\sum\overrightarrow{F_(y)}=0$

$F_(e)-W=0$

$W=F_(e)$ (1)

But weight is mass (m) times gravity acceleration (g) and the magnitude of the electric force is the product of the external electric field (E) and the charge of the particle (q), so using that on (1) and solving for m:

$mg=qE$

$m=(qE)/(g)=((28.0*10^(-6))(600))/(9.8)\approx\mathbf{1.71*10^(-3)\,kg}$

PLEASE HELP!!!
in scientific notation, how many micrograms make 1 kg

Answers

One kilogram is equal to 1,000,000,000 micrograms in scientific notation. This can be represented as 1 kg = 1.0 x 10^9 μg.

Please give brainliest

How can a diving board illustrate the newton's thrid law

Answers

*Just to explain, Newton's Third Law, which is also commonly called the "Law of Action and Reaction" states that force come in pairs, meaning that, for example, if I were to push against the wall, thus exerting a force on the wall, Newton theorizes that the wall exerts a force of equal magnitude right back onto me. *This is thought of more practically when you think of the effects of these forces: I push against the wall, but the wall doesn't move, so the wall is thus pushing back onto me, preventing me from going straight through this wall. *If I were to push onto, say, a sheet of aluminum foil, it would obviously break, but not because it is not exerting a force back, but because the aluminum foil is not strong enough to match my force, so it allows me to go straight through it mostly.

Do magnets work through glass?

Answers

Yes but the thicker the glass the stronger the magnet has to be

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