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2 years ago

The odometer of a car changes from 1048 km to 1096 km in 40

Physics

1 answer:

Makovka662 [10]2 years ago

3 0

Answer:

20m/s

Explanation:

it covers 20 metres in a second

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1. What three particles are found in an atom?

Hoochie [10]

Answer:

Protons, Electrons, and neutrons

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3 years ago

Read 2 more answers

A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this grating, what is the highest orde

True [87]

Answer:

The order of maximum is $n = 5$

Explanation:

From the question we are told that

The diffraction grating is k = 300 lines per mm = 300000 lines per m

The wavelength is $\lambda = 630 \ nm = 630 *10^{-9} \ m$

Generally the condition for constructive interference is mathematically represented as

$dsin \theta = n * \lambda$

Here n is the order maximum

d is the distance the grating which is mathematically represented as

$d = \frac{1}{k}$

=> $d = \frac{1}{300000}$

=> $d = 3.3*10^{-6}\ m$

$n = \frac{dsin \theta}{ \lambda}$

at maximum $sin\theta = 1$

$n = \frac{d}{\lambda}$

=> $n = \frac{3.3*10^{-6}}{630 *10^{-9}}$

=> $n = 5$

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3 years ago

A simple pendulum with a length of 2.23 m and a mass of 6.74 kg is given an initial speed of 2.06 m/s at its equi- librium posit

solniwko [45]

Answer:

a) T = 2.997 s

b) K = 14.3 J

c) φ = 0.444 rad

Explanation:

a) Determine its period

The pendulum simple’s period is:

T = 2π $\sqrt{\frac{l}{g} }$

Where l: Pendulum’s length

g = 9.8 m/s2

T = 2π $\sqrt{\frac{2.23}{9.8} }$

T = 2.997 s

b) Total energy

Initially his total energy is kinetic

K = $\frac{mv^{2} }{2}$

K = $\frac{(6.74)(2.06)^{2} }{2}$

K = 14.3 J

c) Maximum angular displacement

φ = $cos^{-1}(1-\frac{E}{mgl} )$

φ = $cos^{-1}(1-\frac{14.3}{(6.74)(9.8)(2.23)} )$

φ = 0.444 rad

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3 years ago

Nathan has a car that accelerates at 5 m/s2. If the car has a mass of

zhannawk [14.2K]

Answer:

F = 5000 [N] or 5 [kN]

Explanation:

In order to solve this problem we must take into account Newton's second law, which tells us that the sum of all forces applied on a body must be equal to the product of the mass of the body by its acceleration.

F = m*a

where:

F = force [N]

m = mass = 1000 [kg]

a = acceleration = 5 [m/s^2]

F = (1000*5)

F = 5000 [N] or 5 [kN]

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3 years ago

A heavy rocket ship and a light rocket ship are both initially moving at 1000 kilometers per hour in outer space. They are very

cestrela7 [59]

Answer:Both will continue traveling at the same speed because there is no friction.

Explanation: Gravitational force or pull is the force acting to attract all object in and around the Earth to the center of the Earth. The Earth's Gravitational force acts as a Bar magnet.

When objects are working outside the impact of the force of Gravity,it will not matter whether the objects are of the same size or wether one is heavier than the other,in this case both objects will move at the same speed as there is no impact of the Force of Gravity.

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4 years ago