What is gravity?what is one solar day?
1 answer:
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Answer:
1.63
Explanation:
The equation would be used where:
g = acceleration due to gravity
G = universal gravitational constant (6.67408 ×
)
M = mass
R = radius.
assuming the values following both 10s of the mass and radius are their exponents, which is a little confusing, the values given would simply be substituted.
Anyone can correct me if I'm wrong.
Answer:
Explanation:
The bulldozer is moving the rocks as one system, the weigth for the complete system is:
From newton´s second law the acceleration can be related to the force by:
on the middle rock we have the force F12 from the first to the middle rock on the direction of movement and F32 from the las rock to the middle rock on the opposite direction of movement.
For the last rock to accelerate at the same rate it must be subjected to a force:
This equals the force F32 on the opposite direction. the resultant force on the middle rock to mantain this acceleration should be:
The sum of all the forces applied to the middle rock is:
Solving for F12:
Answer:
Q = 2790 J
Explanation:
Mass of silver bar is 250 g
It is heated from 22.0°C to 68.5°C
The specific heat of silver is 0.240 J/g°C
It is required to find the heat absorb by the silver bar. The heat absorbed by an object when heated from one temperature to another is given by :
So, the heat absorbed by the silver bar is 2790 J.