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4 years ago

What is an odometer?

Physics

2 answers:

ra1l [238]4 years ago

6 0

Answer:

It is a instrument used to measure the distance traveled by a vehicle.

Explanation:

This is what it looks like ↓

Oksana_A [137]4 years ago

5 0

Answer:

Odometer is the device that measures and shows the distance a vehicle have travelled.

Hope this help you :3

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. Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connecte

Umnica [9.8K]

Given :

Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.

To Find :

Will the heat produced in both the cases be equal.

Solution :

Heat released is given by :

H = i²Rt

Here, R is resistance and is given by :

$R = \dfrac{\rho L}{A}$

So,

$H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}$

Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.

So, heat produced by Reem's wire is more than Nain one.

Hence, this is the required solution.

7 0

3 years ago

A wheel, starting from rest, rotates with a constant angular acceleration of 1.80 rad/s^2. During a certain 7.00 s interval, it

lora16 [44]

Answer:

a) 1.3 rad/s

b) 0.722 s

Explanation:

Given

Initial velocity, ω = 0 rad/s

Angular acceleration of the wheel, α = 1.8 rad/s²

using equations of angular motion, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

where

θ2 - θ1 = 53.2 rad

t2 - t1 = 7s

substituting these in the equation, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

53.2 =ω(0) * 7 + 1/2 * 1.8 * 7²

53.2 = 7.ω(0) + 1/2 * 1.8 * 49

53.2 = 7.ω(0) + 44.1

7.ω(0) = 53.2 - 44.1

ω(0) = 9.1 / 7

ω(0) = 1.3 rad/s

Using another of the equations of angular motion, we have

ω(0) = ω(i) + α*t1

1.3 = 0 + 1.8 * t1

1.3 = 1.8 * t1

t1 = 1.3/1.8

t1 = 0.722 s

5 0

3 years ago

Who invented abstract geometry

Brrunno [24]

Wassily Kandinsky invented abstract geometry :) have a good week

6 0

3 years ago

Read 2 more answers

A machinist turns on the power on to a grinding wheel at time t= 0 s. The wheel accelerates uniformly from rest for 10 s and rea

laiz [17]

The total number of revolutions made by the wheel is 514

Explanation:

We can solve the problem by applying the suvat equations for rotational motion, to the two different parts of the motion.

During the first part (acceleration), we have:

$\omega_0 =0$ (initial angular velocity)

$\omega_1=58 rad/s$ (final angular velocity)

$t_1=10 s$ (time)

So the angular displacement covered in this part is

$\theta_1 = (\frac{\omega_0+\omega_1}{2})t_1 =(\frac{0+58}{2})(10)=290 rad$

In the second part, we have uniform (circular) motion, with constant angular velocity

$\omega_2 = 58 rad/s$

for

t = 30 s

So the angular displacement in this part is

$\theta_2 = \omega_2 t_2 = (58)(30)=1740 rad$

In the third part, we have a decelerated motion, with constant angular acceleration of

$\alpha=-1.4 rad/s^2$

and initial angular velocity

$\omega_2 = 58 rad/s$

while final angular velocity is

$\omega_3 = 0$

So the angular displacement in this part is given by

$\omega_3^2 - \omega_2^2 = 2\alpha \theta_3\\\theta_3 = \frac{\omega_3^3-\omega_2^2}{2\alpha}=\frac{0-58^2}{2(-1.4)}=1201 rad$

So the total angular displacement of the wheel is

$\theta=290 + 1740 + 1201 = 3231 rad$

Converting into revolutions,

$\theta=3231 rad \cdot \frac{1}{2\pi rad/rev}=514 rev$

Learn more about rotational motion:

brainly.com/question/9575487

brainly.com/question/9329700

brainly.com/question/2506028

#LearnwithBrainly

7 0

4 years ago

A ball is fired from a toy gun with an initial speed of 7.00 m/s with the gun aimed at 300 upward with respect to the horizontal

4vir4ik [10]

Answer:

6.0621 m/s

Explanation:

we all know that horizontal component of the velocity in projectile motion is

= u cosα

u= initial speed of 7.00 m/s of the gun.

α = angle of the initial velocity with the horizontal = 30°

therefore, horizontal component of the ball's initial velocity = 7×cos30°

$7\times\frac{\sqrt{3} }{2} \\=6.0621 \text{m/s}$

3 0

4 years ago