100 meters =1 km average speed 1km
Answer:
d. Mass is the amount of matter in an object.
Explanation:
This is the exact definition of the word mass. My mom is a science teacher.
Answer:
The energy stored in the bungee cord is 43,750 J.
Explanation:
Given;
extension of the bungee cord, x = 25 m
spring constant of the bungee cord, k = 140 N/m
The elastic potential energy stored in the bungee cord is calculated as;
U = ¹/₂kx²
U = ¹/₂(140)(25)²
U = 43,750 J
Therefore, the energy stored in the bungee cord is 43,750 J.
Answer:
A compass can detect a magnetic field and show its direction. Iron filings can show the shape of a magnetic field. A gaussmeter can detect a field and indicate its strength.
Explanation: