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Svetlanka [38]
3 years ago
8

Consider the following statement:The magnitude of the buoyant force equals the weight of the object.Under what circumstances is

this statement true?a. for every object submerged partially or completely in a fluid(incorrect)b. for an object that floatsc. only for an object that sinksd. for no object submerged in a fluid
Physics
1 answer:
Viktor [21]3 years ago
6 0

Answer:

B. for an object that floats

Explanation:

For an object to float the weight of the object must be balanced by the buoyancy force.

However an object will sink if the  magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same volume as the object.

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An student in a swimming pool weighs 450 N and in a regular balance out of the swimming pool weighs 700 N. What is the value of
rewona [7]
The value of buoyant force is 700-450=300N
7 0
3 years ago
what is the magnitude of the electric force between charges of 0.25 C and 0.11 C at a separation of 0.88 m? if the separation be
leonid [27]
F = k \cdot \frac{q_1 q_2}{d} = 9 \cdot 10^{9} \cdot \frac{0.25 \cdot 0.11}{0.88} =  144 \cdot 5^{9} \ N.

If the separation between the charges is increased then the magnitude of the force will increase in fact how the distance is being used in that formula.
6 0
3 years ago
A beam of protons enter the electric field of magnitude E = 0.5 N/C between a pair of parallel plates. There is a magnetic field
HACTEHA [7]

Answer:

0.217 m/s

Explanation:

The protons in the beam passes undeflected when the electric force is equal to the magnetic force:

qE = qvB

where

q is the proton's charge

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v is the speed of the protons

B is the magnitude of the magnetic field

Re-arranging the equation,

v=\frac{E}{B}

And by substituting

E = 0.5 N/C

B = 2.3 T

We find

v=\frac{0.5}{2.3}=0.217 m/s

3 0
3 years ago
Two students push on a 5-kg cart from opposite sides
sweet-ann [11.9K]

Answer:

nothing will happen the cart will be broken or as it is

4 0
3 years ago
Read 2 more answers
Someone who snorts and stop breathing during sleep may be suffering from: a. Catoplexy b. Narcolepsy c. Sleep Apnea d. Insomnia
klio [65]

Answer:

C. Sleep Apnea

Explanation:

Sleep Apnea is when someone who snores and stops breathing while sleeping

6 0
2 years ago
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