For this problem, we will need the famous equation F=ma, as detailed by Isaac Newton.
F=mass x acceleration, where Force is in Newtons.
20 m/s represents the quantity of speed change, but to use in the equation, we need acceleration, not speed. Acceleration is the velocity change over a unit time, so changing 20 m/s in 0.1 seconds means that the acceleration was 200 m/s^2.
Plugging in all your numbers, you find:
F=(0.45 kg)(200 m/s^2) = 90 N of force.
Answer:
Explanation:
charge transferred to sphere = 12 - 8 = 4 nC
a )
The positive charge is decreased on glass rod , that means electrons must have entered the glass rod from the sphere which reduces its positive charge.
b )
charge transferred = 4 nC = 4 x 10⁻⁹ C
charge on one electron = 1.6 x 10⁻¹⁹ C
No of electrons transferred
= Total charge transferred / charge on one electron
= 4 x 10⁻⁹ / 1.6 x 10⁻¹⁹
= 2.5 x 10¹⁰ .
Answer:
12.99 Hz
Explanation:
Resonance is said to occur in an RLC circuit when maximum current is obtained from the circuit. Hence at resonance; XL=XC and Z=R.
XL= inductive reactance, XC= capacitive reactance, Z= impedance, R= resistance
The resonance frequency is given by;
fo= 1/2π√LC
L= 3×10^-3 H
C= 0.05 F
π= 3.142
Substituting values;
fo= 1/2×3.142√3×10^-3 × 0.05
fo= 12.99 Hz
Therefore the resonance frequency of the RLC circuit is 12.99 Hz
The following sentences are completed and explained below
Explanation:
A is a seasonal wind known as monsoon wind that blows in the opposite direction of normal winds.
Prevailing winds are the wind that blows mainly from a single general direction.
Seasonal winds that blow in the opposite direction of normal winds often cause drought in the winter.
The monsoon winds are seasonal winds that refers to wind systems that have a pronounced seasonal reversal of direction.
The winds that blow from single direction over a specific area of the earth is known as prevailing winds.
The answer is D and this response has to be 20 characters long
