Answer:
2.62A
Explanation:
Given
V = 0.43 V
I = 3.1 A
Then, V = IR, R = V/I
R = 0.43/3.1
R = 0.14 Ω
The induced emf = dB/dt * A
So that, dB/dt = emf/A
Since dB/dt is constant then Emf/A(circle) = Emf/A square
So Emf (square)/Emf (circle) = A square / A circle
A circle = πr². The perimeter of the square is 2πr which also is the circumference of the square.
Since the perimeter is 2πr, then each side would be πr/2. Thus, the area of the square would be, (πr/2)² = π²r²/4
So A square/Acircle = (π²r²/4) / πr² = π/4 = 0.79
this means that, emf square = emf circle * 0.79
emf square = 0.43*0.79 = 0.34V
I = V/R
I = 0.34/0.13
I = 2.62A
The velocity of the package just before it hits the ground is 16.7 m/s.
The change of distance with respect to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.
Initial velocity(u)=2 m/s
V(velocity of hitting)=?
S(distance travelled)= 14 meters
The velocity of the package just before it hits the ground is found as;
From the Newton's third equation of motion;
v²=u²+2as.
v²=(-2)²+2(9.81)(14)
v=16.7 m/s
Hence,the velocity of the package just before it hits the ground is 16.7 m/s.
To learn more about the velocity, refer to the link;
#SPJ2
B. casual, third-person, entertaining writing.
C. thoughtful, analytical, academic writing.
D. bullet-pointed, technical, factual writing.
Answer:
prominences
Explanation:
b. the amount of matter in an object
c. the tendency of an object to change its motion
d. the amount of force acting on an object
Answer: Option (a) is the correct answer.
Explanation:
Momentum is the ability of an object to continue its motion. It can be measured by multiplying mass of the object and its velocity.
Mathematically, p = m × v
where p = momentum
m = mass
v = velocity
Therefore, we can conclude that out of the given options, momentum is a measure of how hard it is to stop an object.
Momentum is a measure of how hard it is to stop an object.
Momentum is a measure of how hard it is to stop an object. It depends on the mass and velocity of the object.
The formula for momentum is:
Momentum = mass x velocity.
Therefore, option a. 'how hard it is to stop an object' is the correct answer.
#SPJ6
Answer:
2.124 kg of water
Explanation:
height of the falls is about 48 meters.
Mass of water needed is 1kg = 1000g
Power needed is 106 watts.
The amount of energy in 106 watts in one sec is 106 joules.
To calculate the energy of the 1kg falling water = Mgh
Energy = 1000*9.81*48
Energy = 470880 joules.
1 megawatt is = 1000000watts
The kilogram of water needed is 1000000/470880 = 2.124 kg of water