Invention is the creation of a product and innovation is when someone improves on or makes a significant contribution to an existing product.
Answer:
5 miles a second
Explanation:
20 divided by 4
hope it helps and for brainliest :)
Answer:
d = 1.24 kg/m³
v = 0.81 m³/kg
Explanation:
To do this, we need to analyze the given data and know the expressions we need to use here to do calculations.
We have a pressure of 1.05 atm and 300 K of temperature. To determine the density, we need to use a similar expression of an ideal gas. In this case, instead of using moles, we will use density:
P = dRT
d = P/RT (1)
Where:
R: universal constant of gases
d: density.
From here we can determine the specific volume by using the following expression:
v = 1/d (2)
Now, as we are looking for density, we need to convert the units of pressure in atm to Pascal (or N/m) and the conversion is the following:
P = 1.05 atm * 1.013x10⁵ N/m atm = 106,365 N/m
Now, using R as 287 the density would be:
d = 106,365 / (287 * 300)
<h2>
d = 1.24 kg/m³</h2>
Finally the specific volume:
v = 1 / 1.41
<h2>
v = 0.81 m³/kg</h2>
Hope this helps
Answer:
4000 J
0.4 m
Explanation:
Kinetic energy is one half the mass times the square of velocity:
KE = ½ mv²
Given m = 0.05 kg and v = 400 m/s:
KE = ½ (0.05 kg) (400 m/s)²
KE = 4000 J
Work = change in energy
W = ΔKE
Fd = KE
(10000 N) d = 4000 J
d = 0.4 m
Answer:
v = 11.2 m/s
Explanation:
A stone is dropped near the lunar surface and falls freely for 7 seconds. The acceleration of lunar gravity is 1.6 m / s², what speed will it reach?
Given that,
The acceleration due to the gravity of lunar gravity is 1.6 m/s²
A stone is dropped near the lunar surface and falls freely for 7 seconds.
We need to find the speed with which it reach.
The initial velocity of the stone will be 0 as it was at rest.
Using equation of kinematics v=u+at
So, the stone will reach with a speed of 11.2 m/s