Answer:
9.03 x 10³ m /s
Explanation:
magnetic field inside a solenoid
B = μ₀ n I , where μ₀ = 4π X 10⁻⁷ .
n is no of turns per unit length and I is current
so B₁ = 4π x10⁻⁷x 593 / 20.9 x 5.65 x 10²
201.5 x 10⁻⁴ T
B₂ = 4π x 10⁻⁷ x 343 / 19.1 x 1.37 x 10²
= 30.93 x 10⁻⁴ T
Net magnetc field
B₁ -B₂ = B = (201.5 - 30.93) x 10⁻⁴ T
B = 170.57 x 10⁻⁴ T
Now protons move in circular path of radius R in the magnetic field of B
B q v = m v² / R
v = B q R / m
= 170 .57 x 10⁻⁴ x 1.6 x 10⁻¹⁹ x 5.53 x 10⁻³ / (1.67 x 10⁻²⁷)
= 903.71 x 10
= 9.03 x 10³ m /s
=
If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
<h3>What is an electrical charge?</h3>
An electrical charge can be positive or negative. From the laws of electrostatics, unlike charges attract while like charges repel. As such the effect observed when the rods are individually brought near the sphere will decide the charge on the sphere.
If the sphere is neutral, there is no effect observed when each rod is brought near the sphere. If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
Learn more about electrostatics: brainly.com/question/9774180
150(x+5)-150x=x(x+5)
150x+750-150x=x^2+5x
x^2+5x-750=0
(x-25)(x+30)=0
x=25
The correct explanation for the process of formation of dew from the water vapour is The water releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from gas to liquid.
vapour is a gaseous form, while dew is a liquid state of matter therefore it's clear that vapour has to release energy to come in the liquid state, and in this process vapour, water molecules lose their kinetic and potential energy.
Answer:
sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j
Explanation:
We have given first vector which has length of 7 units and makes an angle of 30° with positive x-axis
So x component of the vector ![=7cos30^{\circ}=7\times 0.866=6.06](https://tex.z-dn.net/?f=%3D7cos30%5E%7B%5Ccirc%7D%3D7%5Ctimes%200.866%3D6.06)
y component of the vector ![=7sin30^{\circ}=7\times 0.5=3.5](https://tex.z-dn.net/?f=%3D7sin30%5E%7B%5Ccirc%7D%3D7%5Ctimes%200.5%3D3.5)
So vector will be 6.06i+3.5j
Now other vector of length of 7 units and makes an angle of 120° with positive x-axis
So x component of vector ![=7cos120^{\circ}=7\times -0.5=-3.5i](https://tex.z-dn.net/?f=%3D7cos120%5E%7B%5Ccirc%7D%3D7%5Ctimes%20-0.5%3D-3.5i)
y component of the vector ![=7sin120^{\circ}=7\times 0.866=6.06j](https://tex.z-dn.net/?f=%3D7sin120%5E%7B%5Ccirc%7D%3D7%5Ctimes%200.866%3D6.06j)
Now sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j