Answer:
the new ppresure 1.89 10⁵ Pa
Explanation:
In this case we assume that the air is compiled as an ideal gas, which is described by the expression
P V = nR T
Where P is the pressure and T is the absolute temperature, let's write this expression for the two points that tell us
P1 = (nR / V) T1
P1 / T1 = nR / V
P2 = (nR / V) T2
P2 / T2 = nR / V
With the constant on the right side is the same we can match the two equations
P1 / T1 = P2 / T2
Let's take the tempera to absolute
T1 = 35.0 + 273.15
T1 = 308.15K
T2 = -40.0 + 273.15
T2 = 233.15K
Let's clear and calculate the pressure (P2)
P2 = P1 T2 / T1
P2 = 2.50 10⁵ 233.15 / 308.15
P2 = 1.89 10⁵ Pa
The gravitational field strength = Defined as Gravitational Force per unit mass
Gravitational Field Strength =
= Gravitational Force Exerted / Mass of object exerted on
= (9.1*10⁴) / (1.1*10⁴)
= 9.1/1.1
≈ 8.27 N/kg
≈ 8.3 N/kg
Option (3) is the answer.
Answer:
B. The force that the elephant applies to the ball
1. D: the ability to cause a change or do work
The others dont make sense for energy.
2. C: Lamp
A lamp uses the electric current to light up a room, or area.
3. B: foil will bend away
The same charges repel each other that is why a magnet is repelled by the same pole of another magnet.
4. A: Sound
You can’t hear light or any of the other options.
5. A: gravity
Gravity is a force of nature that pulls on everything.
6. C: static electricity
The opposite charges stick to each other, a battery again is an example of this.
7. B: a copper nail
Metal is one of the best electric conductors.
8. C: closed circuit
This is because if a circuit is closed the electricity flows through perfectly but for example an open one would not work or it would leak energy.
Hope this helps