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Ira Lisetskai [31]
4 years ago
14

A torque acting on an object tends to produce A. equilibrium B. rotation C. linear motion D. Velocity E. a center of gravity

Physics
1 answer:
arlik [135]4 years ago
4 0
<h2>Answer:</h2>

B. rotation

<h2>Explanation:</h2>

The torque is defined as the twisting or turning effort applied by a force. Recall that a force when acting on a body tends to produce a translational motion, but the rotational, on the other hand, is performed by the torque. When the torque acts on a body it determines an angular acceleration. Torque is important in many subjects in physics like electrical motor, gyroscopes, among others. Finally, the torque vector is defined as:

\boxed{\vec{\tau}=\vec{r}\times\vec{F}} \\ \\ Where: \\ \\ \vec{\tau}: \ Torque \\ \\ \vec{r} \ Position \ Vector \\ \\ \vec{F}: \ Force \\ \\ \times: \ Cross \ Product

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In reaching her destination, a backpacker walks with an average velocity of 1.20 m/s, due west. This average velocity results, b
GaryK [48]

Answer:

x_2 = 648.46\ m

Explanation:

given,

Average velocity due west =  1.20 m/s

case 1

Distance moved in west, x₁ = 5.63 km

speed due west, v₁ = 2.33 m/s

Case 2

Distance moved in east = x₂

speed due east, v₂ = 0.374 m/s

total distance = x₁ + x₂ = 5.62

total time = t₁ + t₂ = 5630/2.33 + x₂/0.374

now,

average\ velocity = \dfrac{total\ distance}{total\ time}

-1.20= \dfrac{-5630 + x_2}{\dfrac{5630}{2.33}+\dfrac{x_2}{0.374}}

negative sign is used because we want the distance in east but velocity is in west.

- 2900 - 3.21 x_2 = -5630 + x_2

-4.21 x_2 = -2730

x_2 = 648.46\ m

The distance she walked in east is equal to 648.46 m

7 0
3 years ago
A 2 kg ball is released from rest at the top of a track and
xz_007 [3.2K]
A) The formula for kinetic energy is E = 1/2 mv^2, so the energy of the ball is 1/2 * 2 * 10^2 = 100J. b) Energy is always conserved, and so if no energy is lost to resistive forces then all 100J of kinetic energy came from its potential energy at the top of the track. c) The formula for potential energy is E = mgh, which we can rearrange for h = E/mg. We know the energy, the mass and the strength of gravity, so we can find h = 100 / (2*9.81) = 5.10m.
7 0
3 years ago
A point charge gives rise to an electric field with magnitude 2 N/C at a distance of 4 m. If the distance is increased to 20 m,
worty [1.4K]

Answer:

0.08 N/C

Explanation:

Electric Field: This is defined as the force per unit charge exerted at a point. The expression for electric field is given as,

E = Kq/r².............................. Equation 1

Where E = Electric Field, q = Charge, k = proportionality constant, r = distance.

making q the subject of the equation,

q = Er²/k............................... Equation 2

Given: E = 2 N/C, r = 4 m,

Substitute into equation 2

q = 2(4)²/k

q = 32/k C.

When r is increased to 20 m,

E = k(32/k)/20²

E = 32/400

E = 0.08 N/C.

Hence the electric Field = 0.08 N/C

5 0
4 years ago
Find the x-component of this
valentina_108 [34]

The x-component of this vector inclined from the horizontal axis is  15m.

<h3>What is vector?</h3>

A vector is the representation of a physical quantity in magnitude and direction.

A vector incline at an angle in has two components. On in x direction and other is in y direction.

For the given length of vector = 45.6 m and the angle of inclination from the +x axis θ = 70.8°

The x component of the given vector is

= 45.6cos 70.8°

= 14.99 m

Thus, the x- component of this vector is 15m.

Learn  more about vector.

brainly.com/question/13322477

#SPJ1

4 0
2 years ago
Can someone help me please. i will give you a brainliest. thanks!​
steposvetlana [31]

Answer:

sry don't know but can u give me brainlliest

5 0
4 years ago
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