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liubo4ka [24]
3 years ago
9

A moving sidewalk has a velocity of 1.3 m/s north. If a man walks south on

Physics
1 answer:
drek231 [11]3 years ago
7 0
All of the above no cap
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A motorcycle accelerates uniformly from rest and reaches a linear speed of 24.8 m/s in a time of 9.87 s. The radius of each tire
Vinvika [58]

Answer:

8.756 rad/s²

Explanation:

Given that:

A motorcycle accelerates uniformly from rest, then initial velocity v_i = 0 m/s

It final velocity v_f = 24.8 m/s

time (t) = 9.87 s

radius (r) of each tire  = 0.287 m

Firstly; the linear acceleration of the motor cycle  is determined as follows:

a_T =(V_f - v_i)/t

=(24.8-0)/9.87

=2.513 m/s²

Then;  the magnitude of angular acceleration

α =a_T /r

=2.513/0.287

=8.756 rad/s²

6 0
3 years ago
Read 2 more answers
If a wave has a frequency of 2 HZ what would it be in seconds?
gavmur [86]

Frequency is not a length of time.  It's exactly the opposite.
Frequency tells you how often something happens.  In fact,
the unit 'Hz' means 'per second'.

   Frequency of 2 Hz means "It happens at 2 per second."

The time it takes for the thing to happen once is exactly the
'reciprocal' of the frequency ... ' 1 ' divided by the frequency.

If the frequency is  2 Hz, then the thing happens every 1/2 second.

If the frequency is 74 Hz, then it happens every  1/74 of a second.

If the frequency is 1 KiloHz, then it happens every  1/1000 second.

8 0
4 years ago
Calculate the potential difference of a wire of 10 ohm , through which 5 A of current is flowing .
HACTEHA [7]
Resistance= Potential Difference/Current
10 Ohm= PD/ 5A
PD= 10 Ohm × 5A
PD=50
Therefore, Potential Difference is B. 50 V
5 0
3 years ago
PLEASE HELP ME WITH THIS ONE QUESTION
yaroslaw [1]

Answer:

Energy =  1.5032*10^(-10) Joules

Explanation:

By Einstein's relativistic energy equation, we know that the energy of a given particle is given by:

Energy = rest energy + kinetic energy.

            = m*c^2  + (γ - 1)*mc^2

Where γ depends on the velocity of the particle.

But if the proton is at rest, then the kinetic energy is zero, and γ = 1

Then the energy is just given by:

Energy = m*c^2

Where we know that:

mass of a proton = 1.67*10^(-27) kg

speed of light = c = 2.9979*10^(8) m/s

Replacing these in the energy equation, we get:

Energy = ( 1.6726*10^(-27) kg)*( 2.9979*10^(8) m/s)^2

Energy = 1.5032*10^(-10) kg*m^2/s^2

Energy =  1.5032*10^(-10) J

5 0
3 years ago
When neither air mass displaces the adjacent one, their boundary is called a(n) ________ front.
Liula [17]

Answer:

correct answer is Stationary

Explanation:

solution

the correct answer is Stationary because when 2 mass of air is pushing each other opposite direction but there is no power to move other mass of air than their stationary front is form as a cold front or the warm front stop moving

and the wind blowing parallel to the front instead of perpendicular that can help it stay in a place

so correct answer is Stationary

8 0
3 years ago
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