4.266 m is the radius of the circular path the electron follows.
Given
Speed of electron (v) = 7.5 × 10⁶ m/s
Earth's Magnetic Field (B) = 1 × 10⁻⁵ T
We already know that
Mass of electron (m) = 9.1 × 10⁻³¹ kg
Charge on electron (q) = 1.6 × 10⁻¹⁹ C
According to the formula
Radius of circular path(r) = mass on electron × speed/ Charge × Magnetic field
Radius of circular path(r) = m × v/q × B
Put the values into the formula
r = 9.1 × 10⁻³¹ × 7.5 × 10⁶/ 1.6 × 10⁻¹⁹ × 10⁻⁵
On solving, we get
r = 4.266 m
Hence, 4.266 m is the radius of the circular path the electron follows.
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The melting of an ice cube is considered a physical change.
<span>xL = xC </span>
<span>ωL = 1/ωC </span>
<span>L = 1/(ω²C) </span>
<span>L = 1/((2πf)²C) </span>
<span>L = 1/((2π * 91 E6)²(10 E-12)) </span>
<span>L = 3.059 E-7 H </span>
Explanation:
acceleration equation is change in velocity/time
so 100/3 will be 33.3km
PART a)
Force of friction on the box is given by formula
now the component of weight along the inclined
now by force balance the force required to hold the block
Part b)
to slide the block upwards the friction force will be upwards along the plane
Part c)
Kinetic friction on the block is given by
now in order to move it up
Part d)
now to accelerate upwards by 0.65 m/s^2 we can use