Answer:
The magnetic field of Earth is created by currents of electricity that flow in the molten center.
Explanation:
Answer:
180 m
Explanation:
The rock follows a free-fall motion - so the vertical distance covered can be found by using the equation
where
g = 10 m/s^2 is the acceleration due to gravity
t = 6.00 s is the time of the fall
Substituting these data, we find the height of the cliff:
In meters per second, the singer is traveling ...
... 83 km/h × (1 h)/(3600 s) × (1000 m)/(1 km) ≈ 23 1/18 m/s
Then the observed frequency is ...
... f' = 343/(343 -23.056)·700 Hz ≈ 750.4 Hz
Answer:
C
Explanation:
The Position Versus Time Graph Of This Object Is A Parabolic Curve.
<h2>
Answer: 1000 J</h2>
The Work done by a Force refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path.
It should be noted that it is a scalar magnitude, and its unit in the International System of Units is the Joule (like energy). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter:
Now, when the applied force is constant and the direction of the force and the direction of the movement are parallel, the equation to calculate it is:
(1)
When they are not parallel, both directions form an angle, let's call it . In that case the expression to calculate the Work is:
(2)
For example, in order to push the 200 N box across the floor, you have to apply a force along the distance to overcome the resistance of the weight of the box (its 200 N).
In this case both <u>(the force and the distance in the path) are parallel</u>, so the work performed is the product of the force exerted to push the box by the distance traveled . as shown in equation (1).
Hence:
>>>>This is the work