Energy is the capacity to do work but not to produce heat. In physics, energy can exist in various forms, including mechanical and thermal energy.
Energy is the capacity to do work and is an important concept in physics. In the context of this question, it is stated that energy is the capacity to do work but not to produce heat. This highlights the distinction between the two forms of energy. For example, mechanical energy can be used to perform work on an object and cause it to move, while thermal energy is associated with heat and not directly related to work. However, it's important to note that energy can be converted from one form to another, such as converting mechanical energy to thermal energy in a friction process.
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Answer:
a) Revolutions per minute = 2.33
b) Centripetal acceleration = 11649.44 m/s²
Explanation:
a) Angular velocity is the ratio of linear velocity and radius.
Here linear velocity = 72 m/s
Radius, r = 0.89 x 0. 5 = 0.445 m
Angular velocity
Frequency
Revolutions per minute = 2.33
b) Centripetal acceleration
Here linear velocity = 72 m/s
Radius, r = 0.445 m
Substituting
Centripetal acceleration = 11649.44m/s²
40 N/C. e. 60 N/C.
Answer:
E = 20 N/C
Explanation:
Given that,
Charge, q = 2 C
Force experience, F = 40 N
We need to find the electric field at that location.
The electric field in terms of electric force is given by :
F = qE
Where
E is the electric field
So, the electric field at that location is 20 N/C.
Given Information:
time = Δt = 0.0250 seconds
Radius = r = 5 cm = 0.05 m
Change in Magnetic field = ΔB = (0.300 - 0.200) T
Number of turns = N = 1
Required Information:
Magnitude of induced emf = ξ = ?
Answer:
Magnitude of induced emf = ξ = 3.141x10⁻² V
Explanation:
The EMF induced in a circular loop of wire in a changing magnetic field is given by
ξ = -NΔΦ/Δt
Where change in flux ΔΦ is given by
ΔΦ = ΔBA
ΔΦ = ΔBπr²
ΔΦ = (0.300 - 0.200)*π*(0.05)²
ΔΦ = 7.854x10⁻⁴ T.m²
ξ = -NΔΦ/Δt
ξ = -(1*7.854x10⁻⁴)/0.0250
ξ = -3.141x10⁻² V
The negative sign is due to Lenz law.
Answer:
-0.0314 V
Explanation:
Parameters given:
Initial magnetic field, Bini = 200 mT = 0.2T
Final magnetic field, Bfin = 300mT = 0.3 T
Number of turns, N = 1
Radius, r = 5 cm = 0.05 m
Time, t = 0.025 secs
Induced EMF is given as:
EMF = [-(Bfin - Bini) * N * pi * r²] / t
EMF = [-(0.3 - 0.2) * 1 * 3.142 * 0.05²] / 0.025
EMF = (-0.1 * 3.142 * 0.0025) / 0.025
EMF = -0.0314 V
To solve this problem we will apply the concept related to the lens power with which farsightedness can be corrected. Mathematically this value is given by the relationship,
Here,
f =focal length
In turn, said expression can be exposed in terms of the distance of the object and the image as:
Here,
p = Object Distance ( By convention is 25cm)
q = Image distance
Replacing we have,
Therefore the power lens that is needed to correct for farsightedness is +2.67D
planet?
A. You would weigh the same on both planets because the planets
are the same size.
B. You would weigh less on planet A because it has less mass than
planet B.
C. You would weigh the same on both planets because your mass
would be the same on both.
D. You would weigh more on planet A because it has less mass than
planet B.
The statement which correctly explains the weight you would experience on each planet is: B. You would weigh less on planet A because it has less mass than planet B.
Weight can be defined as the force acting on a body or an object as a result of gravity.
Mathematically, the weight of an object is given by the formula;
Where;
Hence, we can deduce that the weight and gravity acting on an object is highly dependent on the mass of an object.
Therefore, the higher the mass in a planet, the higher the gravity existing there.
Read more: brainly.com/question/18320053
Answer:
B
Explanation:
The more mass an object has, the more gravity it has.
Answer:
19.3 m/s
Explanation:
Take down to be positive. Given:
Δy = 19 m
v₀ = 0 m/s
a = 9.8 m/s²
Find: v
v² = v₀² + 2aΔy
v² = (0 m/s)² + 2 (9.8 m/s²) (19 m)
v = 19.3 m/s