Convection is the process of heat transfer in fluids by the actual motion of matter. It happens in liquids and gases. It may be natural or forced. It involves a bulk transfer of portions of the fluid.
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Answer:
terminal voltage = 1.34 V
power = 2.68 W
Explanation:
given data
voltage E = 1.54 V
current = 2A
internal resistance = 0.100 ohm
to find out
terminal voltage and electrical power
solution
we know terminal voltage formula is
terminal voltage = E - current × resistance
terminal voltage = 1.54 - ( 2 × 100 )
terminal voltage = 1.34 V
and
power is calculated by ohm law
Power = V × current
power = 1.34 × 2
power = 2.68 W
Explanation:
The de broglie wavelength is given by :
Here,
h is Planck's constant
p is momentum
Momentum and De-Broglie wavelength has inverse relationship. If momentum of an electron double, its wavelength gets half.
The kinetic friction is usually not greater than the applied force. Keep applying more force until you reach a maximum value for the static friction
Answer:
35.67°
Explanation:
Given that:
angle of glance(i) = 30°
Depth of water d = 1.20 m
The height of the observer above the water is h = 3.10 m - 1.20 m
= 1.90 m
Refractive Index of water (n) = 1.33
Using Snell's Law at the water air interface;
n₁ × sin (90- i) = n₂ × sin (90 - r)
1 × cos (i) = 1.33 cos (r)
r = cos ⁻¹ (cos 30/1.33)
r = 49.4
D = h/tan (i)
D = 1.9 / tan (30)
D = 3.291 m
D' = d/tan (r)
D' = 1.2 m/ tan (49.4)
D' = 1.0285 m
∴ the angle at which the spear is to be thrown is :
x = tan⁻¹ [(h+d)/(D+D')]
x = tan⁻¹ [(1.9+ 1.2)/(3.291+1.0285)]
x = tan⁻¹ [3.1/4.3195]
x = 35.67°
∴ At an angle of 35.67° below horizontal is required for you to throw the spear in order to hit the target.