The ends of a magnet where the force is strongest are magnetic

Changes in energy causes matter to change phase. true or false

cupoosta [38]

it's true because we'll engery and causes of matter work together I think

8 0

2 years ago

"when you double the vehicle's weight, you will __________ the vehicle's stopping distance. "

Stolb23 [73]

With same braking power you will be stopping faster on the original weight therefore the answer to fill the blank is increase. The stopping distance will increase as there'll be higher energy to dissipate than lighter cars applied with the braking force similar with that of the lighter car. Also the skid and drag will add to the distance as well as the inertia of the moving heavier vehicle would be greater as well.

5 0

3 years ago

As you pilot your space utility vehicle at a constant speed toward the moon, a race pilot flies past you in her space racer at a

nekit [7.7K]

Answer:

a) At the instant when you measure that the space racer has traveled 1.22 x 108 m past you the time read by the race pilot is 0.478 s

b) When the race pilot reads the value of her time calculated, in part on her timer(0.478 s), she measure the distance of the space utility vehicle from her to be 6.43 × 10⁷ m

c) The instant when the race pilot reads the 0.478 s value calculated in part a) on her timer, the pilot of the space utility vehicle reads 0.478 s

Explanation:

To solve the question, we take account of the theory of relativistic motion as follows

Let Δt be the time duration observed by the race pilot and

Let Δt₀ is the time interval measured by the pilot in the space utility vehicle.

With u, being the velocity of the space racer and c, the speed of light.

Therefore by Lorentz factorization, we have

$\Delta t = \frac{\Delta t_0}{\sqrt{1-\frac{u^2}{c^2} } }$

(a) When the space racer has traveled a distance of 1.22 x 10⁸ m past then we have

$\Delta t = \frac{d}{0.850\cdot c}= \frac{1.22\times 10^8 \hspace{0.09cm} m}{0.85 \times 3 \times 10^8 \hspace {m/s} }$ = 0.478 s

Since $\Delta t = \frac{\Delta t_0}{\sqrt{1-\frac{u^2}{c^2} } }$ , we have

$\Delta t_0 = {\Delta t} \times {\sqrt{1-\frac{u^2}{c^2} } }= 0.478\times\sqrt{1-\frac{(0.8\cdot c)^2}{c^2} }$ = 0.252 s

(b) The distance measured by the racer is given as

d = Δt₀ × 0.850 × c = 0.252 × 0.850 × 3.0 x 10⁸ m/s = 6.43 × 10⁷ m

(c) The time red from within the utility vehicle is given as;

$\frac{1.22 \times 10^8 m}{0.85 \times 3\times 10^8 m/s} = 0.478 s$ .

5 0

3 years ago

When you turn up the thermostat on your furnace several things happen. which of these would be considered a chemical property of

kaheart [24]

There are really only two choices there ... hot air rising is one PART of a convection current, and convection current happens because of physical properties.

Fuel can burn in a furnace because of its chemical properties. <em>(B)</em>

4 0

3 years ago

Describe how the words Science and optics would appear when viewed in a plane mirror?

Gre4nikov [31]

Answer:

Lateral inversion will occur in a plane mirror.

Explanation:

When words are displayed in a plane or flat mirror, the result is that if the words are displayed left, they change to right and if they were normally displayed right, they change to left. This phenomenon is known as lateral inversion. So, this will apply to the words, Science and optics. Only the sides will be interchanged.

A plane mirror reflects light, therefore, the image that is produced by it remains the same size. The image produced will not appear upside down. Only the sides will be interchanged.

4 0

3 years ago