Answer:
4
Explanation:
It has 8 O atoms and 4 O2(g) molecules
Answer:
the answer is the temperatures of both beakers' water will increase by the same amount...
Explanation:
I know this because i just did it on study island
Answer:
I was also going to ask same question edited:ok i found its true
Weight = (mass) x (gravity)
70 N = (mass) x (9.8 m/s²)
Divide each side by (9.8 m/s²) , and you have
mass = 70 N / 9.8 m/s² = 7.14 kg.
___________________________
Mass on the moon:
Mass doesn't change. It's a number that belongs to the bowling ball,
no matter where the ball goes. If the mass of the bowling ball is 7.14 kg
anywhere, then it's 7.14 kg everywhere ... on Earth, on the moon, on Mars, rolling around in the trunk of my car, or floating in intergalactic space.
However, WEIGHT depends on the gravity wherever the ball happens to be
at the moment.
The acceleration of gravity on the moon is 1.622 m/s².
So the WEIGHT of the ball on the moon is
(7.14 kg) x (1.622 m/s²) = 11.58 Newtons
That's only about 16% of its weight on Earth.
Answer:
58.32 N
Explanation:
Area of a circle = 
where r is the radius of the circle.
The cylinder has a radius of 0.02 m, its area is;
=
= 
x 
= x 0.0004
= 1.2571 x 
Area of the cylinder is 0.0013 
.
The safety valve has a radius of 0.0075 m, its area is;
=
= x 
= x 5.625 x 
= 1.7679 x 
Area of the valve is 0.00018 .
From Hooke's law, the force on the safety valve can be determined by;
F = ke
= 950 x 0.0085
= 8.075 N
Minimum force, 
, required can be determined by;
= 
= 
= 
= 58.32
The minimum force that must be exerted on the piston is 58.32 N.
