Answer:
9.3e-8 Meters
Inertia increases as mass increases.
Explanation:
Inertia is the resistance of an object to any change in motion. Inertia is proportional the mass of the object: in fact, as we experience in common situations, the larger the mass of an object, the more difficult it is to change its motion.
A simple example: while it is quite easy to stop a tennis ball thrown towards us, we know that it is not so easy to stop a large truck travelling towards us with the same speed: the reason for that is that the truck has much more mass than the tennis ball, so it has much more inertia. Therefore, inertia increases as mass increases.
0.010 meter through a potential difference of
9.0 volts?
(1) 2.7 × 10^3 J (3) 3.0 J
(2) 27 J (4) 3.0 × 10^−2 J
Answer:
B) 6.6 cm
Explanation:
A hollow steel ball of diameter 3.0 m barely floats in water. What is the thickness of the wall of the ball? The density of iron is 7.87 g/cm3 and that of water is 1000 kg/m3. A) 37 cm B) 6.6 cm C) 79 cm D) 131 cm
density steel 7750 to 8050 kg/m³, use 7870
density of water at 20C = 0.998 g/cm³ = 998 kg/m³
Note, the overall density must be equal to that of water, 998 kg/m³
density is the ratio of mass of a body to its volume
volume = V = ⁴/₃πr³ = ⁴/₃π(1.5)³ = 14.14 m³
Mass = 998 kg/m³ x 14.14 m³ = 14109 kg
Density of steel = 7870 kg/m³ = 14109 kg / V
V = 1.79 m³
deduct 1.79 m³ from the total volume of 14.14 m³
Volume of shell is ⁴/₃πr1³ – ⁴/₃πr2³ = ⁴/₃π(r1³ – r2³) = 1.79
divide ⁴/₃π from both sides
r1³ – r2³ = 0.428 m³
r2³ = (1.5)³ - 0.428
r2 = 1.434
to get the thickness we say that
the radius of the hollow steel ball -the radius of the ball
Thickness is 1.5 – 1.434 = 0.066 m or 6.6 cm
Answer:
the 25 kg one
Explanation:
The higher the weight the higher the inertia.
lets suppose we blow wind at both of these objects at a very high rate equally, u will notice after some time depending on the strength of wind the 8kg object will probably move earlier than the 25 kg one.