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Vladimir [108]
3 years ago
12

Physics Question (attached)

Physics
1 answer:
hammer [34]3 years ago
8 0

Answer:

The answer is "\bold{10.6 \ \ \frac{m}{s^2}}"

Explanation:

The  Formula of acceleration:

\bold{a= \frac{v-v_0}{t}}

Given value:

t= 50\\v= 856\\v_0= 324

Calculating the acceleration:

\to  a = \frac{(856 - 324)}{50}\\\\

       = \frac{(532)}{50}\\\\= \frac{(106.4)}{10}\\\\= 10.64 \ \ \frac{ m}{s^2}

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An elastic circular bar is fixed at one end and attached to a rubber grommet at the other end. The grommet functions as a torsio
Artist 52 [7]

Answer:

2.1 rad(anticlockwise).

Explanation:

So, we are given the following data or parameters or information in the question above:

=> "The torsional stiffness of the spring support is k = 50 N m/rad. "

=> "If a concentrated torque of mag- nitude Ta = 500 Nm is applied in the center of the bar"

=> "L = 300 mm Assume a shear modu- lus G = 10 kN/mm2 and polar monnent of inertia J = 2000 mln"

Hence;

G × J = 10 kN/mm2 × 2000 mln = 20 Nm^2.

Also, L/2 = 300 mm /2 = 0.15 m (converted to metre).

==> 0.15/20 (V - w) + θ = 0.

==> 0.15/20 (V - w ) = -θ.

Where V = k = 50 N m/rad

w = 183.3 θ.

Therefore, w + Vθ = 500 Nm.

==> 183.3 + 50 θ = 500 Nm.

= 6.3

Anticlockwise,

θ = 2.1 rad.

4 0
3 years ago
Which equation can be used to solve for acceleration?<br> t=v/a<br> vf=at-vi<br> a=d/t<br> v=a/t
postnew [5]

Answer:

t=v/a

Explanation:

Acceleration is defined as the rate of change of velocity with time. It is mathematically expressed as;

  Acceleration  = \frac{Final velocity - Initial velocity}{time}  

The change in velocity per unit of time is the acceleration

 From this equation;

      time  = \frac{change in velocity }{acceleration}  

This expression is analogous to the expression chosen.

3 0
3 years ago
The feeling of weightlessness occurs because _____________________.
lbvjy [14]

Answer:

The feeling of weight is one of compression.

Explanation:

All your body is being pulled down by gravity yet your feet ( if standing) or your back or something is holding you up.  

Your body is compressed by the PAIR of forces and it is that compression that you feel.  

So when you remove the supporting force then all the body is free to move together and there is no compression within you.  

Hence you perceive no weight.

8 0
3 years ago
Read 2 more answers
of the waves listed, the one with the longest wavelength is a(n) a. x ray. b. radio wave. c. microwave. d. visible light wave.
djyliett [7]
From the items on that particular list, the longest waves are radio waves.
6 0
3 years ago
Suppose that while moving into an apartment you move a refrigerator into place by sliding it across the floor. The refrigerator w
sweet-ann [11.9K]

Answer:

358 N

Explanation:

F=\mu N where F is the force, \mu is the coefficient of static friction between the floor and the refrigerator and N is the weight

Normally, N=mg hence F=\mu mg where m is the mass of object and g is the acceleration due to gravity

In this case, N is given as 895 N and the coefficient of static friction between the floor and the refrigerator is 0.400 hence substituting them in the formula we obtain

F=\mu N= 0.4\times 895 N= 358 N

4 0
4 years ago
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