Answer:
the difference between a charged body is an body that has either a surplus or deficiency of electrons, and is negatively and positively charged respectively. And the difference between an uncharged body is that it’s a 'neutral' body that has an equal number of protons and electrons.
Explanation:
Give me some answer choices and i will be happy to help
The direction of the fourth displacement is θ = 12.775 ( south of west)
Explanation:
write down the values in the question,
The passage is 180m west, 290m in the direction 45° east of south, 280m at 30° east of north.
x = 290 × cos 45° + 280 × sin 30° -180
x=165.06 m
y= 280 cos ( 30° - 290 × sin (45°)
y= 37.426°
θ = tan ^-1 (y/x) = tan^-1 (37.426 / 165.06)
θ= 12.775° ( south of west)
Answer:
3.95 x 10⁵ Pa
Explanation:
given,
depth of water tank = 10 m
bottom tank height = 20 m
density of water = 1000 Kg/m³
diameter of hose = 2 cm
Pressure at ground level = ?
net head of water from the ground
H = 20 + 10
H = 30 m
pressure exerted at the ground
P = ρ g h
P = 1000 x 9.8 x 30
P = 2.94 x 10⁵ Pa
atmospheric pressure = 1.01 x 10⁵ Pa
total pressure on the ground
= atmospheric pressure + pressure due to water tank
= 1.01 x 10⁵ Pa + 2.94 x 10⁵ Pa
= 3.95 x 10⁵ Pa
Answer:
4. The voltage is reduced by a factor of 2
Explanation:
The relationship between voltage, current and resistance in a circuit is given by Ohm's law:
V = RI
where
V is the voltage
R is the resistance
I is the current
In this problem,
the resistance in the circuit is halved: R' = R/2
the current is constant : I' = I
So the new voltage is
![V' = I' R' = I (\frac{R}{2})=\frac{1}{2} (IR) = \frac{V}{2}](https://tex.z-dn.net/?f=V%27%20%3D%20I%27%20R%27%20%3D%20I%20%28%5Cfrac%7BR%7D%7B2%7D%29%3D%5Cfrac%7B1%7D%7B2%7D%20%28IR%29%20%3D%20%5Cfrac%7BV%7D%7B2%7D)
so the voltage is reduced by a factor 2.