Answer:The mass of ball B is 10 kg.
Explanation;
Mass of ball A = ![M_A=5 kg](https://tex.z-dn.net/?f=M_A%3D5%20kg)
Velocity of the ball A before collision:![U_A=20 m/s](https://tex.z-dn.net/?f=U_A%3D20%20m%2Fs)
Velocity of ball A after collision=![V_A=10 m/s](https://tex.z-dn.net/?f=V_A%3D10%20m%2Fs)
Mass of ball B= ![M_B](https://tex.z-dn.net/?f=M_B)
Velocity of the ball B before collision:![U_B=10 m/s](https://tex.z-dn.net/?f=U_B%3D10%20m%2Fs)
Velocity of ball B after collision=![V_B=15 m/s](https://tex.z-dn.net/?f=V_B%3D15%20m%2Fs)
![M_AV_A+M_BV_B=M_AU_A+M_BU_B](https://tex.z-dn.net/?f=M_AV_A%2BM_BV_B%3DM_AU_A%2BM_BU_B)
![5 kg\times 10 m/s+M_B\times 15=5 kg\times 20m/s+M_B\times 10m/s](https://tex.z-dn.net/?f=5%20kg%5Ctimes%2010%20m%2Fs%2BM_B%5Ctimes%2015%3D5%20kg%5Ctimes%2020m%2Fs%2BM_B%5Ctimes%2010m%2Fs)
![M_B=10kg](https://tex.z-dn.net/?f=M_B%3D10kg)
The mass of ball B is 10 kg.
Answer: 0.2N
Explanation:
mass of wagon = 100 grams
Convert mass in grams to kilograms
If 1000 grams = 1kg
100 grams = (100/1000) = 0.1kg
Acceleration of wagon = 2m/s/s
Force on the wagon = ?
Recall that Force is the product of mass of an object by the acceleration by which it moves.
i.e Force = mass x acceleration
Force = 0.1kg x 2m/s/s
Force = 0.2N
Thus, the force on the wagon is 0.2Newton
Having your space clean. have on close toed shoes. have your hair pulled back into a ponytail. keep ur work space clean. wear gloves and goggles. do not have on droopy clothes. follow the steps on the board and double check them.
Answer:
1 and 3
Explanation:
<u>1 and 3 </u>
Increasing coils increases strength
COOLING the wire would increase current flow and strength of magnet
Adding an iron core will definitely increase the strength of the electromagnet
Answer:
The magnitude of the force is 79.893 N.
Explanation:
The magnitude of the electrostatic force between the two particles is determined by Coloumb's Law, whose formula is:
(1)
Where:
- Electrostatic constant, in newtons-square meters per square coulomb.
- Electric charges, in coulombs.
- Distance, in meters.
If we know that
,
,
and
, then the magnitude of the force is:
![F = \frac{\kappa \cdot |q_{A}|\cdot |q_{B}|}{r^{2}}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7B%5Ckappa%20%5Ccdot%20%7Cq_%7BA%7D%7C%5Ccdot%20%7Cq_%7BB%7D%7C%7D%7Br%5E%7B2%7D%7D)
![F = 79.893\,N](https://tex.z-dn.net/?f=F%20%3D%2079.893%5C%2CN)
The magnitude of the force is 79.893 N.