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3 years ago

Forces that act on an object but are not equal in size

1 answer:

7 0

Forces that are equal in size but opposite in direction and do not cause a change in an object's movement are called balanced forces.

forces that aren't equal in size and do cause a change in movement (what it seems like you're asking for) are called UNBALANCED FORCES

so answer (in case that wasn't clear, as I'm tired) : unbalanced forces

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In a Rutherford scattering experiment a target nucleus has a diameter of 1.34×10-14 m. The incoming α particle has a mass of 6.6

Rasek [7]

Answer:

E = 2.5 x 10⁻¹⁴ J

Explanation:

given,

diameter = 1.33 x 10⁻¹⁴ m

mass = 6.64 x 10⁻²⁷ kg

wavelength is equal to diameter

de broglie wavelength equal to diameter

$\lambda = \dfrac{h}{mv}$

$1.33 \times 10^{-14}= \dfrac{6.626 \times 10^{-34}}{6.64 \times 10^{-27}\times v}$

$v= \dfrac{6.626 \times 10^{-34}}{6.64 \times 10^{-27}\times 1.33 \times 10^{-14}}$

v = 7.5 x 10⁶ m/s

Kinetic energy is equal to

$E = \dfrac{1}{2}mv^2$

$E = \dfrac{1}{2}\times 6.64 \times 10^{-27}\times (7.5\times 10^6)^2$

E = 2.5 x 10⁻¹⁴ J

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3 years ago

Does the magnetic north pole move every 37 days

brilliants [131]

No, the magnetic North Pole doesn't move every 37 days. I believe.

4 0

3 years ago

14. A group of students tested different materials in an electric circuit. The table shows the results of their experiment.

kvasek [131]

Answer: There is no pic homie

Explanation:I am on the same question, so I can’t help :(

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3 years ago

Which of these is exhibiting kinetic energy?

Alenkasestr [34]

Answer:

A.a space station orbiting Earth

Explanation:

As we know that kinetic energy given as

K.E.=1/2 m v²

Where m= mass

v= velocity

If the velocity of the object is zero then it posses zero kinetic energy.

We also know that when object at a height from the ground or from a reference line then it posses potential energy and it does not have kinetic energy because object is in rest position.

In the option B and C system is in rest position that is why these type of system posses zero kinetic energy.

So the answer is A.

A.a space station orbiting Earth

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4 years ago

A crane raises a crate with a mass of 75 kg to a height of 10 m. Given that the

Crazy boy [7]

Answer: C. 7,350 J

Explanation:

Just did it in Apex

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3 years ago