The best conclusion to draw based on the description would be: <span>A.The electric field points to the left because the force on a negative charge is opposite to the direction of the field.
This phenomenon happened because </span><span>The electric field from a positive charge will points away from the charge while the electric field from a negative charge will points toward the charge</span>
Answer:
Magnetic force, F = 38.95 N
Explanation:
Given that,
Length of the conductor, L = 3.88 m
Magnetic field, B = 2 T
Current flowing in the conductor, I = 5.02 A
The magnetic field perpendicular to the plane of the semicircle. The angle between the magnetic field and the plane is 90 degrees. The expression for the magnetic force is given by:
F = 38.95 N
So, the magnitude of the total force acting on the conductor in the magnetic field is 38.95 N. Hence, this is the required solution.
<span>Answer to the question is 9joules</span>
Answer:
The sports car has more momentum.
Explanation:
Truck: P = mv = 5000 kg × 10 m/sec = 50,000 kg-m/sec
Sports car: P = mv = 1200 kg × 50 m/sec = 60,000 kg-m/sec
Given: Heat given to mercury (Q) = 100 J
Mass of mercury (m) = 80 g = 80 × 10⁻³ kg
Specific Heat capacity of mercury (c) = 138 J/kg°C
Let the rise of temperature be Δt
Formula Used: Q = mcΔt
Here, all alphabets are in their usual meanings.
Calculation:
Q = mcΔt
or, Δt = Q / mc
or, Δt = 100 J /[(80 × 10⁻³ kg)×(138 J/kg°C)]
or, Δt = 9.058 °C
or, Δt = 9.1 °C
Hence, the required increase in temperature will be 9.1 °C.
