The marshmallow shrunk because of the increased amount of air pressure. I know this because I have once decreased the air pressure, (put a marshmallow in vacuum chamber), and it expanded.
Answer:
1) A:1, B:1, C:1
2) A:1, B:1, C:1
3) B:1, C:2, A:3
Explanation:
1)
a = , where V - linear speed.
R - radius of ferris wheel.
These values are constant, so at any position centripetal acceleration will be the same.
2)
F = ma = , where a - centripetal acceleration.
V - linear speed.
R - radius of ferris wheel.
These values are constant, so at any position centripetal force will be the same.
3)
So, at bottom point normal force is maximume, at top point normal force is minimum.
B:1, C:2, A:3 (bottom: Greatest, midheight: Second greatest, top: Third greatest)
Acceleration = vf-vi /t
10-22/3=2.6m/s^2
Answer:
Explanation:
Given that,
Mass of star M(star) = 1.99×10^30kg
Gravitational constant G
G = 6.67×10^−11 N⋅m²/kg²
Diameter d = 25km
d = 25,000m
R = d/2 = 25,000/2
R = 12,500m
Weight w = 690N
Then, the person mass which is constant can be determined using
W =mg
m = W/g
m = 690/9.81
m = 70.34kg
The acceleration due to gravity on the surface of the neutron star is can be determined using
g(star) = GM(star)/R²
g(star) = 6.67×10^-11 × 1.99×10^30 / 12500²
g (star) = 8.49 × 10¹¹ m/s²
Then, the person weight on neutron star is
W = mg
Mass is constant, m = 70.34kg
W = 70.34 × 8.49 × 10¹¹
W = 5.98 × 10¹³ N
The weight of the person on neutron star is 5.98 × 10¹³ N