Push ups or standing on one foot
Answer: False but read why
Heated water molecules expands ( become less dense) but they do float to the top.
Question:
The question is incomplete. The mass and radius of the orbit was not added. Find below the remaining part of the question and the answer.
Rank from largest to smallest.
A) m=200 kg and L= 5000m
B) m=400 kg and L=2500m
C)m=100kg and L=2500m
D)m=100kg and L=10000m
E)m=800kg and L=5000m
F)m=300kg and L=7500m
Answer:
Fe > Ff > Fa = Fb = Fd > Fc
4*10^6 N > 2.25*10^6 > 1 *10^6 N = 1 *10^6 N = 1 *10^6 N > 0.25*10^6 N
Explanation:
The force experienced by the satellite is given by the formula;
Fc = kmL
where;
k = constant = 4π²/T²
m = mass of satellite
L = radius of orbit
Since, all the satellites complete the circular orbit in the same amount of time. The constant k does not affect the force value.
A) The force acting on satellite A from their rocket is given as follows:
Fa = kmL
Fa = 200 * 5000
= 1 *10^6 N
B) The force acting on satellite B from their rocket is given as follows:
Fb = kmL
=400 *2500
= 1*10^6 N
C) The force acting on satellite C from their rocket is given as follows:
Fc = kmL
= 100 *2500
= 0.25*10^6 N
D) The force acting on satellite D from their rocket is given as follows:
Fd = kmL
= 100 *10000
= 1*10^6 N
E) The force acting on satellite E from their rocket is given as follows:
Fe = kmL
= 800 *5000
= 4*10^6 N
F) The force acting on satellite F from their rocket is given as follows:
Ff = kmL
= 300 *7500
= 2.25*10^6 N
The ranking is given as:
Fe > Ff > Fa = Fb = Fd > Fc
4*10^6 N > 2.25*10^6 > 1 *10^6 N = 1 *10^6 N = 1 *10^6 N > 0.25*10^6 N
The acceleration due to gravity at the Earth's surface is 9.8 m/s/s
<span>So a 2 kg object will accelerate at 9.8 m/s/s if it is dropped..... actually all dropped objects will accelerate at the same rate. </span>
<span>The force of gravity on the object is given by Newton's 2nd Law </span>
<span>F = m . a </span>
<span>F = 2 . 9.8 = 19.6 N </span>
<span>Now go to Mars , with a lower gravitational field strength. It only accelerates falling objects at 3.71 m/s/s </span>
<span>So the force of gravity on the object is F = 2 . 3.71 = 7.42 N </span>
<span>But the answer is (2) 2 kg, because the mass of the object stays the same and that is what you are asked for. </span>
<span>Someone was trying to be tricky.</span>
B. Conductors allow electricity to go through them only. Such as copper etc.