Answer:
<em>The end of the ramp is 38.416 m high</em>
Explanation:
<u>Horizontal Motion
</u>
When an object is thrown horizontally with an initial speed v and from a height h, it follows a curved path ruled by gravity.
The maximum horizontal distance traveled by the object can be calculated as follows:
![\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3Dv%5Ccdot%5Csqrt%7B%5Cfrac%20%20%7B2h%7D%7Bg%7D%7D)
If the maximum horizontal distance is known, we can solve the above equation for h:
![\displaystyle h=\frac {d^2g}{2v^2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20h%3D%5Cfrac%20%20%7Bd%5E2g%7D%7B2v%5E2%7D)
The skier initiates the horizontal motion at v=25 m/s and lands at a distance d=70 m from the base of the ramp. The height is now calculated:
![\displaystyle h=\frac {70^2\cdot 9.8}{2\cdot 25^2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20h%3D%5Cfrac%20%20%7B70%5E2%5Ccdot%209.8%7D%7B2%5Ccdot%2025%5E2%7D)
![\displaystyle h=\frac {4900\cdot 9.8}{2\cdot 625}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20h%3D%5Cfrac%20%20%7B4900%5Ccdot%209.8%7D%7B2%5Ccdot%20625%7D)
h= 38.416 m
The end of the ramp is 38.416 m high
Answer:
An <u>applied force</u> is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.
A <u>friction force</u> is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object. For example, if a book slides across the surface of a desk, then the desk exerts a friction force in the opposite direction of its motion. Friction results from the two surfaces being pressed together closely, causing intermolecular attractive forces between molecules of different surfaces. As such, friction depends upon the nature of the two surfaces and upon the degree to which they are pressed together. The maximum amount of friction force that a surface can exert upon an object can be calculated using the formula below:
= µ •
Answer:
yes
Explanation:
objects with constant velocity also have zero net external force. this means the forces on the object are balanced. this mean they are in equilibrium
Answer:
The value is ![B = 0.0452 \ T](https://tex.z-dn.net/?f=B%20%3D%20%200.0452%20%5C%20%20T%20)
Explanation:
From the question we are told that
The number of turns is N = 1000
The length is L = 50 cm = 0.50 m
The radius is r = 2.0 cm = 0.02 m
The current is I = 18.0 A
Generally the magnetic field is mathematically represented as
![B = \mu_o * \frac{N }{L} * I](https://tex.z-dn.net/?f=B%20%3D%20%5Cmu_o%20%20%2A%20%5Cfrac%7BN%20%7D%7BL%7D%20%20%2A%20%20I)
Here
is the permeability of free space with value
![\mu_o = 4\pi * 10^{-7} N/A^2](https://tex.z-dn.net/?f=%5Cmu_o%20%20%3D%20%204%5Cpi%20%2A%2010%5E%7B-7%7D%20N%2FA%5E2)
So
![B = 4\pi * 10^{-7} * \frac{1000}{0.50} * 18.0](https://tex.z-dn.net/?f=B%20%3D%20%204%5Cpi%20%2A%2010%5E%7B-7%7D%20%20%2A%20%20%20%5Cfrac%7B1000%7D%7B0.50%7D%20%2A%20%2018.0)
=> ![B = 0.0452 \ T](https://tex.z-dn.net/?f=B%20%3D%20%200.0452%20%5C%20%20T%20)