Answer:
<h2>
r = 9.27*10^-4m</h2>
Explanation:
Given the following parameters;
Tension in the wire T = 821N
wave speed of the transverse wave v = 185m/s
density of nickel = 8.9*10³kg/m³
radius of the wire = ?
Using the relationship for finding the speed of the wave to first get the linear density;
where is the linear density
Also;
= mass m/Length L
Since mass m = density * volume
Since A = area of the wire =
Given
0.024 = 8.9*10³*3.14r²
0.024 = 27.946r²
r² = 0.024/27.964
r² = 8.6*10^-7
r =√8.6*10^-7
r = 9.27*10^-4m
Radius of the wire is 9.27*10^-4m
Bob gained (80lbs x 14ft) = 1120 ft-lbs of energy.
Fred gained (110lbs x 14ft) = 1540 ft-lbs of energy
Since they both took the same amount of time, Fred's power (rate
of doing work) was greater than Bob's power (rate of doing work).
The physical properties that can be used to identify an
unknown material are the ability to rust, malleability and thermal
conduction. The answers are letters A, B and D. Weight cannot be used to
identify an unknown material.
Answer:
a) tires rubbing, b) the weight has a component parallel to the floor
c) he child's back support, d) The tension of the rope and weight
Explanation:
In this exercise, we are asked to indicate the origin of the forces for the centripetal movement parallel to the rope, e) gravitational force
a) When a car turns, the centripetal force has two origins
* The tires rubbing against the road
* If the road has a lean angle, the component of the weight directed towards the center of the circle also contributes to the centripetal force.
b) the child in general has some degree of inclination with respect to the post, for which the weight has a component parallel to the floor that is responsible for the centripetal movement of the system
c) The bench rotates together with the carousel, so the child's back support is the response to the centripetal force
d) The tension of the rope has two components: the component perpendicular to the movement and the component of the weight (parallel to the rope) the difference of these two forces is the centripetal force
e) The gravitational force of the sun on the earth is what creates the centripetal motion
Well i think the answer is impossible to find because there is no picture