Answer:
Explanation:
Given a material with temperature coefficient of resistance <em>c</em>, the equation that relates the resistance 
at temperature 
and the resistance 
at temperature 
is
We want to double our resistance, so 
, thus having:
For this T must be:
which for our values means (with 
, remember to write temperature in S.I., and that for silver 
):
The net force applied to it is 6311.9 N.
To calculate the net force to the car, first, we need to find the acceleration using the equation of motion.
Force: This as be defined as the product of mass and acceleration of a body. The S.I unit of force is Newton (N)
⇒ Formula
- S = ut+at²/2................. Equation 1
⇒ Where:
- u = Initial velocity
- S = Distance
- t = Time
- a = acceleration
From the question,
⇒Given:
- S = 40 m
- t = 3.0 s
- u = 0 m/s (at rest)
⇒ Substitute these values into equation 1
⇒ Solve for a
- 9a = 80
- a = 80/9
- a = 8.89 m/s²
⇒ To get the force, we use the formula below
- F = ma .................... Equation 2
⇒ Where:
- F = Force applied
- m = mass of the car
⇒ Given:
⇒ Substitute these values into equation 2
Hence the net force applied to it is 6311.9 N.
Learn more about force here: brainly.com/question/13370981
One eighth of a gram will remain
Answer:Waves shape the earths surface because they change the form of the coastal land form, meaning that when a wave is formed and moves they are also moving sand and rocks which can change the shape of the surface
Explanation:
