B. The work done is equal to the area under the curve.
C. Work cannot be determined from this type of graph.
D. The work done is equal to length of the curve.
E. The work done is equal to the slope of the curve.
The work done by a force over a given displacement, as represented in a force versus position graph, is equal to the area under the curve.
In a force versus position graph, the work done by the force over the given displacement is represented by the area under the curve. The work done is the integral of the force with respect to displacement which, in a graphical representation, translates to the area under the curve of the force versus position graph. For example, if the force is constant, the graph will be a rectangle, and the work done will be the product of force (height of the rectangle) and displacement (width of the rectangle). If the force is variable, the area under the curve might need to be calculated by dividing it into small sections and summing up their areas.
#SPJ12
b 0.013 m
c 130 m
d 76.92 m
Answer:
Option C is the correct answer
Explanation:
We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this case initial velocity = horizontal velocity = 100 m/s, acceleration = 0 , we need to calculate displacement when time = 1.3 seconds.
Substituting
So, bullet will travel a distance of 130 meter in 1.3 seconds.
Option C is the correct answer
Answer:
The torque on the coil is
Solution:
No. of turns per meter length, n = 1400 turns\m
Current, I = 4.9 A
Angle,
No. of turns of coil, N = 42 turns
Area, A =
Current in the coil, I' = 0.45 A
Now,
To calculate the exerted torque on the coil:
The magnetic field, B produced inside the coil is given by:
Now, the torque exerted is given by:
Answer:
Explanation:
Given:
A long solenoid having
no. of turns per meter, n =1400
current, I = 4.9 A
A small coil of wire placed inside the solenoid
angle of orientation with respect to the axis of the solenoid, °
no. of turns in the coil, N = 42
area of the coil,
current in the coil,
We have for torque:
.......................(1)
∵................................(2)
where:
B= magnetic field
The permeability of free space =
Substitute B from eq. (2) into eq. (1) we have:
putting the respective values in above eq.
Used to determine the change of an object
At the beginning of a basketball game, a referee tosses the ball straight
up with a speed of 4.6 m/s. a player cannot touch the ball until after it reaches its maximum height and begins to fall down. what is the minimum time that a player must wait before touching the ball? s
-----------------------
kinemaic equation
v=u-at
0=4.6-9.81xt
t=4.6/9.81 ... about half a second