Depending on its size, composition, and the eccentricity of its orbit, that scanty description could apply to a planet, an asteroid, a comet, a meteoroid, or another star.
Answer:
Explanation:
We are given that
Amount of work needed to bring a point charge q0 from infinity to a point P=
We know that potential at point P=
Where U=Amount of work needed to bring a point charge q from infinity to a point P
Initially ,
New charge, q=
Then, work done,U=
Hence, the amount of work needed to bring a new charge 4q0 from infinity to point P=
Answer:
Explanation:
V = u / q,
Work = P = V
1U / 1/4 = 4U
Answer:
E=930.84 N/C
Explanation:
Given that
I = 1150 W/m²
μ = 4Π x 10⁻⁷
C = 2.999 x 10⁸ m/s
E= C B
C=speed of light
B=Magnetic filed ,E=Electric filed
Power P = I A
A=Area=4πr² ,I=Intensity
E=930.84 N/C
Therefore answer is 930.84 N/C
To find the magnitude Em of the electromagnetic waves at the top of the earth's atmosphere, we use the intensity of electromagnetic wave and solving the equation Em = sqrt(2Icμo), we can find the magnitude of Em in units of N/C.
To find the magnitude Em of the electromagnetic waves at the top of the Earth's atmosphere, we use the fact that the power received per unit area is the intensity I of the electromagnetic wave. According to the given information, this intensity is 1150 W/m2. The relationship between the intensity and electromagnetic fields is given by the equation I = 0.5 * E²/c * μo. Solving for Em, we get Em = sqrt(2Icμo), where μo = 4π × 10-7 T N/A² is the permeability of free space and c = 2.99792 × 10⁸ m/s is the speed of light.
Subbing in the given values, we can compute Em as:
Em = sqrt[2 * 1150 W/m² * 2.99792 × 10⁸ m/s * 4π × 10-7 T N/A²]
This computation will give the strength of the electric field at the top of the earth’s atmosphere in units of N/C.
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Answer:
If the acceleration is constant, the movements equations are:
a(t) = A.
for the velocity we can integrate over time:
v(t) = A*t + v0
where v0 is a constant of integration (the initial velocity), for the distance traveled between t = 0 units and t = 10 units, we can solve the integral:
Where to obtain the actual distance you can replace the constant acceleration A and the initial velocity v0.
Answer:
Explanation:
We can solve for the final angular velocity of the system using the law of momentum conservation
Where is the moments of inertia of the disk before. is the moments of inertia of the disk after (if we treat the clay as a point particle). is the angular speed before.
So the final momentum of the system is 27.5 kgm2/s
Answer:
The final angular momentum is 35.75 kg.m²/s
Explanation:
Given;
mass of disk, M = 5 kg
radius of disk, R = 1 m
mass of clay, M = 3 kg
radius of clay, R = 0.5 m
final angular momentum, = 11 rad/s
Final angular momentum angular momentum of the disk that the clay lumped with;
where;
is the final moment of inertia
Final angular momentum of the disk;
=
= 3.25 x 11 = 35.75 kg.m²/s
Therefore, the final angular momentum is 35.75 kg.m²/s
Answer:
K = 6.02 × 10⁻¹⁹ J
Explanation:
The momentum (p) of an electron is its mass (m) times its speed (v).
p = m × v
v = p / m = (1.05 × 10⁻²⁴ kg.m/s) / 9.11 × 10⁻³¹ kg = 1.15 × 10⁶ m/s
We can find the kinetic energy (K) using the following expression.
K = 1/2 × m × v²
K = 1/2 × 9.11 × 10⁻³¹ kg × (1.15 × 10⁶ m/s)²
K = 6.02 × 10⁻¹⁹ J