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GenaCL600 [577]
3 years ago
5

A plane starts from rest and accelerates uniformly over a time of 20 seconds for a distance of 300 meters. Determine the plane´s

acceleration.
Physics
1 answer:
dalvyx [7]3 years ago
7 0

Answer:

1.5 m/s2

Explanation:

U = 0 m/s ( from rest)

t = 20 s

S = 300 m

S = ut + 1/2 * a * t2

300 = 0 + 1/2 * a * 20*20

a = 1.5m /s2

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Lenz’s law states that an induced magnetic field in a conductor
mrs_skeptik [129]

Answer:

Lenz’s law states that an induced magnetic field in a conductor opposes the applied flux through the conductor.

Explanation:

According to the Lenz's law, the direction of induced e.m.f is such that it generates a current which in turn produces a magnetic field that would oppose the change causing it.

In other words, the direction of any magnetic induction effect is such that it opposes the cause of the effect.

Therefore; an induced magnetic field in a conductor, opposes the applied flux through the conductor.

3 0
4 years ago
A 9.800 mol sample of nitrogen gas is maintained in a 0.8166 L container at 301.8 K. What is the pressure in atm calculated usin
cluponka [151]

Answer:

P = 359.8 atm

Explanation:

The van der Waals' equation relates the properties of a gas, introducing constants "a" and "b" in order to consider gases as real gases. The equation is:

(P+a.\frac{n^{2} }{V^{2} } ).(V-nb)=n.R.T

where,

P: pressure

a: correction factor for intermolecular forces

V: volume

b: correction factor for molecules' volume

n: moles

R: ideal gas constant

T: absolute temperature

(P+\frac{1.390L^{2}atm}{mol^{2}}.\frac{(9.800mol)^{2}}{(0.8166L)^{2}}).(0.8166L-9.800mol.\frac{3.910 \times 10^{-2}L}{mol})=9.800mol \times \frac{0.08206atm.L}{mol.K} \times 301.8K\\(P + 200.2atm).(0.4334L) = 242.7atm.L\\P=359.8 atm

8 0
3 years ago
A net force of 3 N accelerates a mass of 3 kg at the rate of 1 m/s2. The acceleration of a mass of
Cloud [144]

Answer:

,mkjh ,bkl m,

Explanation:

3 0
4 years ago
In which of the following processes does the molecules become more orderly?A) water freezing B) ice melting C) water evaporating
Sliva [168]

A) Water freezing

This is called the process of turning water as a liquid to its solid form which is ice.

Ice is almost together as one unlike liquid. This is why the molecules are more orderly.

The process of freezing is exothermic which means the heat has to be removed in the process.

5 0
3 years ago
The same strength force was exerted in the same direction on both Object A and Object B. Why did Object A go faster than Object
VashaNatasha [74]

Answer:

m_B > m_A

the mass of body B must be greater than the mass of body A

Explanation:

Newton's second law establishes a linear relationship between the force, the mass of the body and its acceleration

        F = m a

        a = F / m

Let's analyze this expression tells us that the force is of equal magnitude for the two bodies, but body A goes faster than body B, this implies that it has more relationships

         a_A > a_B

         \frac{F}{m_A} > \frac{F}{m_B}

         m_B > m_A

Therefore, for this to happen, the mass of body B must be greater than the mass of body A

6 0
3 years ago
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