So sometimes when you actually do you work it’s happens and you get answers idk about that
Given : Acceleration of the ball is 9.8 m / s² . The pulling force is 1.4 N .
To Find : The mass of the ball .
Solution : It is given that a ball accelerates download with a acceleration of 9.8 m / s² . And the acting force is 1.4 N .
We know that , Force acting is equal to the product of mass and acceleration . That is ,
⇒ Force = mass × accelerⁿ
⇒ 1.4 N = mass × 9.8 m / s²
⇒ mass = 1.4 N / 98 m/s²
⇒ mass = 14N / 98 m/s².
⇒ mass = 1/7 kg .
<u>Hence</u><u> </u><u>the </u><u>mass</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>object</u><u> is</u><u> </u><u>1</u><u>/</u><u>7</u><u> </u><u>kg</u><u> </u><u>≈</u><u> </u><u>0</u><u>.</u><u>1</u><u>4</u><u> </u><u>kg</u><u>.</u>
Answer:
Magnitude of velocity = 10.81 m/s
Explanation:
Given
mass of whale, m = 1559.5 kg
Momentum, p = 16858.2 kg.m/s
To find: velocity (v)
We know that momentum is given by equation:
p = mv
v = p/m
=
= 10.81 m/s
Hence magnitude of velocity = 10.81 m/s
Answer:
So, you're going to need the equation ρ = ρo [1 + α(T-To)]
1.59x10^-8 ohms*m is your ρo because that is measured at your reference temperature (To), 20◦C. T is your 6◦C and α is 0.0038(◦C)−1. So, using that you solve for ρ. If you keep up with the units though, you notice it comes out to be ohms*m and that isn't what you want.
So, the next equation you need is J=σE where E is your electric field (3026 V/m) and σ is the electrical conductivity which is the inverse of your answer you got in the previous equation. So find the inverse of that answer and multiply it by your electric field and that will give you the current density.
I hope this helps!
Explanation: