A jeep-like vehicle has a canvas top that seals around all sides. When the jeep is at rest, the canvas roof is flat and level. If all the windows of the jeep are rolled up, and the jeep is traveling along the road at high speed, how does the canvas roof react?
Answers
When Jeep is in motion the Canvas top is initially flat
so when Jeep is in motion the air at the top of the Jeep is in high speed
while the air inside the jeep is not moving that fast
so as per Bernuolli's Theorem we know
so if we increase the speed the pressure will decrease
so the canvas will experience less pressure at the top of canvas while at the bottom it will have more pressure from inside
so the Canvas will bulge outside or curved outside
Answer:
it flops, duh
Explanation:
I own a jeep
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if a train travelling at 10m/s starts to accelerate at 1m/s^2 for 15s on a straight track, calculate its final speed in m/s
Personification means to give human characteristics to animals, ideas, and objects. a. Trueb. False
A student releases a block of mass m at the top of a slide of height h1. the block moves down the slide and off the end of the table of height h2, landing on the floor a horizontal distance d from the edge of the table. Friction and air resistance are negligible. The overall height H of the setup is determined by the height of the room. Therefore, if h1 is increased, h2 must decrease by the same amount so that the sum h1+h2 remains equal to H. The student wants to adjust h1 and h2 to make d as large as possible.A) 1) Without using equations, explain why making h1 very small would cause d to be small, even though h2 would be very large?2) Without using equations, explain why making h2 very small would cause d to be small, even thoughh1 would be largeB) Derive an equation for d in terms of h1, h2, m, and physical constants as appropriate.
Human activities can have an impact on natural disasters.
Answers
Reflection is the answer
b) Both heat capacity and specific heat account for mass.
c) Neither specific heat nor heat capacity accounts for mass.
d) Only specific heat accounts for mass.
2. Which of the following factors is not used in calculating the specific heat of a substance?
a) mass
b) temperature change
c) heat required for a temperature change
d) melting point
3. The amount of heat needed to raise 250 g of a substance by 15 K is 2,930 J. What is the specific heat of the substance ?
a) 0.78
b) 11,000
c) 780
d) 1.1 × 10^7
4. If 50 g of liquid water [C = 4,180 J/(kgK)] changes temperature in a calorimeter from 298 K to 348 K, then how much heat is transferred?
a) 10.5 J
b) 10.5 kJ
c) 72.7 J
d) 100 kJ
Answers
Answers
Answer:
655 nm
Explanation:
When the intereference is destructive then the thickness, d of antireflective film coating one side is given by
2d=w/2n
Where w is wavelength and n is the reflective index of the film
Making w the subject of formula then
w=4nd
Substituting 1.25 for n and 131 nm for d then the wavelength will be
w=4*1.25*131=655 nm
Therefore, the wavelength is equivalent to 655 nm
The formula for calculating the wavelength in an antireflective film involves thickness (d) and refractive index (n). For n = 1.25 and d = 131 nm, the resulting wavelength is 655 nm.
When light waves encounter a thin film, some of the waves are reflected from the top surface of the film, and some pass through it. These waves can interfere with each other, leading to constructive or destructive interference. In the case of antireflective coatings, destructive interference is desired to minimize reflection.
The formula you mentioned is used to calculate the thickness (d) of an antireflective film that results in destructive interference for a specific wavelength (w) of light. The formula is:
2d = w / (2n)
Where:
d is the thickness of the film.
w is the wavelength of light.
n is the refractive index of the film.
To find the wavelength (w) when given the thickness (d) and refractive index (n), you can rearrange the formula:
w = 4 * n * d
Now, let's calculate the wavelength using the provided values:
n = 1.25 (refractive index)
d = 131 nm (thickness in nanometers)
Substitute these values into the formula:
w = 4 * 1.25 * 131 = 655 nm
Therefore, the calculated wavelength (w) is 655 nanometers (nm). This means that for a film with a refractive index of 1.25 and a thickness of 131 nm, destructive interference occurs at a wavelength of 655 nm.
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The object of mass with 6.3 Kg will have an acceleration of 1.12 m/s² if a force of 7.1 Newtons is applied.
What is force?
Force is an external agent acting on a body to change its motion or to deform it. There are various kinds of forces such as gravitational force, magnetic force, nuclear force etc.
Acceleration is a physical quantity that measures the rate of change in velocity of a body. Like force, it is a vector quantity. As per Newton's second law of motion, force is the product of mass and acceleration.
Hence, F = m a
given that, m = 6.3 Kg
F = 7.1 N.
then a = F/m
a = 7.1 N/6.3 kg
= 1.12 m/s²
Therefore, the acceleration of the object is 1.12 m/s².
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Answer:
F=ma
7.1=6.3×m
7.1÷6.3=m
m=1.126 kg
Answers
b. Gravitational and magnetic forces are the most alike because they are both types of charges that occur in nature.
c. Nuclear and magnetic forces are the most alike because they are both related to mass and weight.
d. Strong nuclear force is most like electric because they are both related to distance.
Answers
Answer:
d) strong nuclear force is most like electric because they are both realted to distance.
Explanation:
btw good luck with 01.08 Motion Module Exam for Physical Science.