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zloy xaker [14]
3 years ago
9

2. What is the momentum of a 9-kg object moving at -1.5 m/s?/

Physics
1 answer:
Alla [95]3 years ago
4 0

Answer:13.5kgm/s

Explanation:

mass=9kg

Velocity=1.5m/s

Momentum=mass x velocity

Momentum=9 x 1.5

Momentum=13.5kgm/s

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Originally, light is unpolarized. It then travels through 3 polarizers: the first with its transmission axis aligned vertical, t
Ilya [14]

Answer:

C. 1.5 W/m²

Explanation:

I_0 = Unpolarized light = 4 W/m²

\theta = Angle with which the polarizer is turned

The polarization of light is given by

I=\frac{I_0}{2}cos^2\theta\\\Rightarrow I=\frac{4}{2}cos^2(30)\\\Rightarrow I=2\times \left(\frac{\sqrt3}{2}\right)^2\\\Rightarrow I=1.5\ W/m^2

The intensity of light after passing through the first polarizer is 1.5 W/m²

5 0
3 years ago
Select an incorrect statement relating to a Carnot cycle operating on a gas. A) Each process is a reversible process. B) work oc
nekit [7.7K]

Answer:

B)

D)

Explanation:

Carnot cycle ;

  This is the ideal cycle for all type of heat engine.All the process in the Carnot cycle is reversible processes ( those process does not leave any effect on the system as well as surrounding when the process is  reversed  is known as reversible process).It have four process in which two process is constant temperature and other two is isentropic or we can say that reversible adiabatic.

In the two process(constant temperature) only heat interaction take places and other two process(adiabatic) only work interaction take places.

So the option B and D is incorrect for Carnot cycle.

4 0
3 years ago
During heavy rain, a section of a mountainside measuring 2.3 km horizontally (perpendicular to the slope), 0.75 km up along the
Jobisdone [24]

Answer:

93328 kg

Explanation:

\rho = Density of mud = 1900 kg/m³

Volume of the cuboid is given by

V=2300\times 750\times 1.4\\\Rightarrow V=2415000\ m^3

Volume is also given by

V=Al\\\Rightarrow l=\dfrac{V}{A}\\\Rightarrow l=\dfrac{2415000}{520\times 520}\\\Rightarrow l=8.9312\ m

The length of the cuboid is 0.89312 m

For the small volume

V_a=al\\\Rightarrow V_a=5.5\times 8.9312\\\Rightarrow V_a=49.12\ m^3

Mass is given by

m=\rho V_a\\\Rightarrow m=1900\times 49.12\\\Rightarrow m=93328\ kg

The mass of the mud is 93328 kg

6 0
3 years ago
When solving problems involving forces and Newton's laws, the following summary of things to do will start your mind thinking ab
Kaylis [27]

Answer:

Explanation:

There is no acceleration in vertical direction

Fn = mg + Fp sin 35

Frictional force = 99.7 N

Net force in forward direction = Fp cos 35 - 99.7

= 168 cos 35 - 99.7

= 137.61-99.7

= 37.91 N

net acceleration of chair = net force / mass

= 37.91 / 50

= .7582 m / s² .

Download docx
3 0
3 years ago
Which capital city lies 8,727 feet above sea level in the mountains of colombia?
Oduvanchick [21]

Answer: bogota is the capital city that lies 8,727 feet above sea level in the Colombia mountains

Explanation:

4 0
3 years ago
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