Answer:
The value of the acceleration of gravity of the Unknown Planet = 1.14 ![\frac{m}{s^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%20%7D)
Explanation:
length of the pendulum (L)= 1.15 m
Time period (T)= 6.29 seconds
We know that time period of a simple pendulum is given by
⇒ T = 2
×
put the values in the above formula we get
⇒ T = 2
× ![\sqrt \frac{1.15}{g}](https://tex.z-dn.net/?f=%5Csqrt%20%5Cfrac%7B1.15%7D%7Bg%7D)
⇒ 6.29 = 2
× ![\sqrt \frac{1.15}{g}](https://tex.z-dn.net/?f=%5Csqrt%20%5Cfrac%7B1.15%7D%7Bg%7D)
By solving the above equation we get
⇒ g = 1.14 ![\frac{m}{s^{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%20%7D)
This is the value of the acceleration of gravity of the Unknown Planet.
First, we need to fight the weight of the balls instead of their mass. We do this by multiplying their weight it kg by 9.8. This gives us .98 N. To find the potential energy of the rolling ball, we find its kinetic energy. The formula for this is KE=mass*velocity^2*1/2.
Plugging in our numbers, we have Kinetic energy = .1 * 1^2*1/2 which gives us .05 joules.
Now we find the potential energy of the ball on the shelf. For this we do:
Potential energy = .1*9.8*1, and our answer is .98 joules. Clearly, the ball on the shelf has more energy.
Answer:
A.) the photoelectric effect
Explanation:
Explanation:
a potassium ion has a charge of 1+.
Magnesium is in the second column and therefore has 2 electrons in its outermost shell. It would tend to lose two electrons and form a +2 ion. Potassium is in the first column and therefore has 1 electron in its outermost shell. It would tend to lose one electron and form a +1 ion.
plz Mark me brainliest
<u> </u> <span><span> No. Neutron stars are the remnants of very large stars that have supernova'd. Anything below 1.44 solar masses becomes a dwarf, anything above 5 solar masses becomes a black hole. Everything in between becomes a neutron star (or quark star, but it's not proven).</span>
</span>