It takes the spoon 5.38 seconds to transfer 25 j of heat energy to your hand.
Heat energy is created by the movement of tiny atoms, molecules, or ions in solids, liquids, and gases. It is possible to transfer heat energy from one thing to another. Heat is a flow or transfer that happens when two objects have different temperatures from one another.
Convection is the process of transferring heat through gases and liquids. The particles in heated air absorb heat energy, allowing them to move faster and farther apart while carrying the heat energy. Because warm air is less dense than cold air, it rises.
Cooler air rising from below replaces the air that has risen. When warm air rises and is again replaced by colder air, a convection current is created.
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Answer:
225cos30
Explanation:
Force in the direction of the work done
Answer:
a) E = 2.30×10^6N/C
Direction =+E . It will point radically outward
b)E = -3.3×10^5NC^-1
Direction =- E,it will point radically inwards
Explanation:
Magnitude E at 4.7cm= 0.047m
E= wavelength 1/2×3.142×rEo
E= (6.0×10^-6)/2×3.142×0.047×(8.85×10^-12)
E= (6.0×10^-6)/(2.6×10^-12)
E= 2.30×10^6N/C
Direction= +E shows it will point radically outward.
b) Magnitude E at 8.1cm=0.081
E= (wavelength 1+ wavelength 2) / 2×3.142rEo
E= [(6.0×10^-6)-(7.5×10^-6)]/(2×3.142×0.081×(8.84×10^-12)
E= -(1.5×10^-6)/(4.5×10^-11)
E= -3.3×10^5N/C
Direction =I-A it will point inwards
First, we calculate for the weight of the object by multiplying the given mass by the acceleration due to gravity which is equal to 9.8 m/s²
Weight = (14 kg)(9.8 m/s²)
Weight = 137.2 N
The component of the weight that is along the surface of the inclined plane is equal to this weight times the sine of the given angle.
Weight = (137.2 N)(sin 52°)
weight = 108.1 N
(9) The force needed to make the object fall on Earth is 127.4 N.
(10) The mass of the object falling at the acceleration due is 1.94 kg.
(11) The force required for feather is 0.98 N and the force required for the bowling ball is 44.1 N
(9) The force needed to make the object fall on Earth is calculated form Newton's second law of motion.
F = mg
where;
- <em>m is the mass of the object = 13 kg</em>
- <em>g is acceleration due to gravity = 9.8 m/s²</em>
<em />
F = 13 x 9.8 = 127.4 N
Thus, the force needed to make the object fall on Earth is 127.4 N.
(10) The mass of the object is calculated from Newton's second law of motion.
F = mg
Thus, the mass of the object falling at the acceleration due is 1.94 kg.
(11) The force required to make each of the objects fall is calculated from Newton's second law of motion.
Force required for feather: F = 0.1 x 9.8 = 0.98 N
Force required for the bowling ball: F = 4.5 x 9.8 = 44.1 N.
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