Answer:
Explanation:
As we know that the oil drop experiment tells us the balancing the gravitational force by electrostatic force.
So ,
Electrostatic force = Gravitational force
qE=mg
Here , q is charge , E is electric field , m is mass and g is gravity.
so,
Insert values from question,
or
This is the required value of electric field.
Force of friction=75 N
Explanation:
we use Newton's second law of motion
F- Ff= ma
F = applied force=250 N
Ff= force of friction
a= acceleration= 5.83 m/s²
m= mass=30 kg
250- Ff= 30 (5.83)
Ff=250-30(5.83)
Ff=250-175
Ff=75 N
I can think of 3 ways to do that: (1) Glue an extra piece onto the object. (2) Cut a piece off of the object. (3). Take the object to a different planet, where the acceleration of gravity is different.
Answer:
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity can neither be added nor be removed.
Explanation:
- Mass (m) = 20 Kg
- Acceleration due to gravity on the earth (g) = 10 m/s^2
- Acceleration due to gravity on the planet (g1) = 10 × 3 m/s^2 = 30 m/s^2
- We know, weight = mass × acceleration due to gravity
- Therefore, the weight of the body on the surface of the planet
- = (20 × 30) N
- = 600 N
<u>Answer</u><u>:</u>
<u>6</u><u>0</u><u>0</u><u> </u><u>N</u>
Hope you could understand.
If you have any query, feel free to ask.
