<span>1 hour 36 minutes = 1 36/60 = 1 3/5 = 1.6 hours
Speed of car leaving wallace be x mph
Speed of car leaving vernonville will be ( x+10) mph
1.6 ( x + x+10) = 192
2x + 10 = 120
2x = 110
x = 55
ANSWER Wallace car = 55 mph Vernonville = 65mph
Therefore, </span><span>the average speeds of both cars are 55 mph for the Wallace car and 65 mph for the Vernonville.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.</span>
a) Making h as the shorter cathetus, we have,
We proceed to calculate the work done by gravity
b) It's necessary to calculate the Kinetic Energy, we use the equation of KE,
c) By work energy theorem
d) we calculate net work through the law of conservation
Protons are tightly bound to the nucleus of atoms, and the nucleus is
'shielded' from the outside world by the 'cloud' of electrons around it.
It takes a lot of energy to separate a proton from the nucleus. When
that happens, it's a 'radioactive' or a 'nuclear' event, and the atom has
changed into an atom of a different substance. This isn't something
that's happening around us very often.
On the other hand, the electrons are on the outside of the atom, and
it's rather easy to convince an electron to leave its atom and flow off
to somewhere else.
<h3>yes, there are human health risks caused by exposure to x rays</h3>
- describe the main risk (s) ::: - may cause damage to cells in the body
- large doses may lead cells to be cancerous
- causes mutations in the DNA
- describe common sources of exposure ( or overexposure ) :::
- natural background radiation e.g. - cosmic rays
- medical radiation e.g. - CT scans & medical x - rays
- man - made radiation e.g. - airport security scanners
- describe a technology, device, or behavior that can be used for protection, or to decrease exposure :::
- x - ray beam filters
- digital x - ray detectors
- technologies reduce radiation doses in radiography &
mammography
<em>hope that helps !!</em>
Answer:
185 N
Explanation:
Sum of forces in the x direction:
Fₓ = -(80 N cos 75°) + (120 N cos 60°)
Fₓ = 39.3 N
Sum of forces in the y direction:
Fᵧ = (80 N sin 75°) + (120 N sin 60°)
Fᵧ = 181.2 N
The magnitude of the net force is:
F = √(Fₓ² + Fᵧ²)
F = √((39.3 N)² + (181.2 N)²)
F = 185 N
