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Tasya [4]
3 years ago
10

I have to right a written expression of reflection what do i right

Physics
1 answer:
skad [1K]3 years ago
6 0
Hi there. I can help you, but I need to ask a few questions first.
You want to know what to write on a question that asks what the written expression of a reflection. Please tell me if that is what you are asking so I can help you.
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How is wind direction indicated on a weather map ?
kotegsom [21]
It uses arrows to show what way the wind is going
6 0
3 years ago
You and your roommate are moving to a city360 mi away. Your roommate drives a rental truck at a constant 50 mi/h , and you drive
AnnyKZ [126]

Answer:

42 minutes

Explanation:

First, let us find out the time required by the roommate, who is driving the truck, to reach the city.

We know that,

time=\frac{distance}{speed} =\frac{360}{50} hrs=7.2hrs

Now, you are planning to rest a bit after traveling for an hour. So,

distance covered in that 1 hour = 60mi/h\times1h=60 miles

time required by you to cover the total distance = \frac{360mi}{60mi/h} =6hours

If you wish reach at the destination half an hour (0.5 h) before your roommate, you can expend a total of 7.2-0.5=6.7hours throughout your journey.

Hence, you can rest for  6.7-6=0.7hours=(0.7\times60)minutes=42minutes

3 0
3 years ago
Displacement is which of the following types of quantities?A. vectorB. scalarC. magnitudeD. dimensional
agasfer [191]

Answer: A. vector

Explanation:

Movement is the change of position of a body at a certain time. The body that experiences this change of position is called mobile.

In this sense, the <u>displacement</u> is the distance in a straight line between the initial and final position of this mobile, which differentiates it from <u>the trajectory, </u> which is the <u>path followed by the body in its movement and a scalar magnitude.</u>

Hence, the displacement is a vector.

6 0
3 years ago
An electromagnetic wave traveling in a
Phoenix [80]
The answer is (a) 6,000,000m
7 0
4 years ago
A spherical snowball is melting in such a way that its radius is decreasing at a rate of 0.1 cm/min. At what rate is the volume
Ne4ueva [31]

Answer: 80.384 cubic cm /min

Explanation:

Let V denote the volume and r denotes the radius of the spherical snowball .

Given : \dfrac{dr}{dt}=-0.1\text{cm/min}

We know that the volume of a sphere is given by :-

V=\dfrac{4}{3}\pi r^3

Differentiating on the both sides w.r.t. t (time) ,w e get

\dfrac{dV}{dt}=\dfrac{4}{3}\pi(3r^2)\dfrac{dr}{dt}\\\\\Rightarrow\ \dfrac{dV}{dt}=4\pi r^2 (-0.1)=-0.4\pi r^2

When r= 8 cm

\dfrac{dV}{dt}=-0.4(3.14)(8)^2=-80.384

Hence, the volume of the snowball decreasing at the rate of 80.384 cubic cm /min.

6 0
3 years ago
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