Answer: 1960 N
Explanation:
The bear is sliding down at constant velocity: this means that its acceleration is zero, so the net force is also zero, according to Newton's second law:
There are two forces acting on the bear: its weight W, pulling downward, and the frictional force Ff, pulling upward. Therefore, the net force is given by the difference between the two forces:
From the previous equation, we find that the frictional force is equal to the weight of the bear:
The intensity of sound is just like the force of gravity, the force between electric charges, and the intensity of light . . . they all DEcrease at the same rate that the SQUARE of the distance INcreases.
So if two people are watching or listening to the same source, and one intensity is 1/10 as intense as the other intensity, then the farther person must be √10 times as far from the source as the nearer person is.
√10 = 3.1622 ...
So the second guy is about <em>3.16 miles</em> from the fire truck.
Answer:
2.572 m/s²
Explanation:
Convert the given initial velocity and final velocity rates to m/s:
- 65 km/h → 18.0556 m/s
- 35 km/h → 9.72222 m/s
The motorboat's displacement is 45 m during this time.
We are trying to find the acceleration of the boat.
We have the variables v₀, v, a, and Δx. Find the constant acceleration equation that contains all four of these variables.
Substitute the known values into the equation.
- (9.72222)² = (18.0556)² + 2a(45)
- 94.52156173 = 326.0046914 + 90a
- -231.4831296 = 90a
- a = -2.572
The magnitude of the boat's acceleration is |-2.572| = 2.572 m/s².
Answer:
The discharging current is 
Explanation:
From the question we are told that
The radius of each circular plates is R
The displacement current is 
The radius of the central circular area is 
The discharging current is mathematically represented as
where A is the area of each plate which is mathematically represented as
and k is central circular area which is mathematically represented as
![k = \pi [\frac{R}{2} ]^2](https://tex.z-dn.net/?f=k%20%20%3D%20%20%5Cpi%20%5B%5Cfrac%7BR%7D%7B2%7D%20%5D%5E2)
So
![I_d = \frac{\pi R^2 }{\pi * [ \frac{R}{2}]^2 } * I](https://tex.z-dn.net/?f=I_d%20%20%3D%20%20%5Cfrac%7B%5Cpi%20R%5E2%20%7D%7B%5Cpi%20%2A%20%5B%20%5Cfrac%7BR%7D%7B2%7D%5D%5E2%20%7D%20%2A%20%20I)
substituting values
Answer:
The answere is A force that pulls objects toward the center of Earth
Explanation:
Hope this helpe! :)
