Answer: a, c, and g
Explanation:
Buoyant Force is an upward force acting on submerged object equal to weight of fluid displaced by the submerged object.
If no part is submerged (V = 0) that is volume. Therefore there is Zero Buoyant Force.
Fully submerged produces greatest buoyant force since greatest amount of fluid was displaced.
Whenever it is fully submerged it will have the greatest buoyant force.
Buoyant Force DOES NOT Depend on Depth
A fully submerged object displaces its volume in fluid
A floating object displaces its weight in fluid.
Seamus can add batteries to increase the voltage, and he can decrease the space between the wire coils to accomplish this goal.
<h3>What is Attraction?</h3>
This is defined as any type of force that causes objects to come together and is possessed by objects such as a magnet.
In order to increase the power of the magnet it is best to increase the voltage and decrease the space of the coils so as to ensure it attracts at least four paper clips which makes option C the most appropriate choice.
Read more about Magnet here brainly.com/question/14997726
Answer:
A and B
Explanation:
The relation between frequency and wavelength is shown below as:

c is the speed of light having value 
Thus, the product of the wavelength and the frequency is constant and equal to 
<u>Option A is correct.</u>
Given, Frequency = 
Thus, Wavelength is:



Also, 1 m =
Å
So,
<u>Wavelength = 3.0 Å</u>
<u>Option B is correct.</u>
As stated above, the speed of electromagnetic radiation is constant. Hence, each radiation of the spectrum travels with same speed.
<u>Option C is incorrect.</u>
Solution :
Acceleration due to gravity of the earth, g 

Acceleration due to gravity at 1000 km depths is :




= 8.23 m/s
Acceleration due to gravity at 2000 km depths is :




= 6.73 m/s
Acceleration due to gravity at 3000 km depths is :



= 5.18 m/s
Acceleration due to gravity at 4000 km depths is :




= 3.64 m/s