To solve this problem we will apply the concepts related to potential gravitational energy. This is defined as the product between mass, acceleration and change in height and can be expressed as,
Here,
m = Mass
g = Gravitational acceleration
= Height
Replacing with our values we have,
Therefore the change in gravitational potential energy is 883J.
Answer:
what is the question in "2. A race car rounding a corner at a constant speed of 200 miles per hour. Yes not"
Answer:
The student needs to group variables into dimensionless quantities.
Explanation:
Large experiments take a lot of time to perform because the significant variables need to be separated from the non-significant variables. However, for large quantities of variables, it is necessary to focus on the key variables.
One technique to do that is to use the Buckingham Pi Theorem. The theorem states that the physical variables can be expressed in terms or independent fundamental physical quantities. In other words:
P = n- k
n = total number of quantities
k = independent physical quantities.
A place to start with will be to find dimensionless quantities involving the mass, length, time, and at times temperature. These units are given as M, L, T, and Θ
The grouping helps because it eliminates unwanted and unnecessary experiments.
Answer:
, 48 kg
Explanation:
The density of an object is the amount of mass contained per unit of volume.
Density is given by the equation
where
m is the mass of the object
V is its volume
In this problem, we have a wooden block of dimensions:
2 m, 0.2 m, 0.2 m
So, the volume of the block is
We also know that the density of the block is
Therefore, the mass of the block is
