3 years ago

ANSWER IN LESS THAN A MINUTE!! EASYY!

Physics

1 answer:

jek_recluse [69]3 years ago

4 0

Answer:

20 mile/hr 1st choice is correct

You might be interested in

A submarine sends a signal and receives an echo after 5 seconds. Calculate the speed of sound if distance of object from submari

Reil [10]

$speed = distance \div time$
Since the sound travels from the submarine to the object AND back, it actually travelled 3625x2=7250m.

$7250 \div 5 = 1450$
Speed of sound: 1450m/s

3 0

4 years ago

Read 2 more answers

What is a synonym & an antonym for property ?<br> What is a synonym of physical change ?

tigry1 [53]

Answer:

A synonym for property is a quality or a characteristic. An antonym is non-physical. A synonym of physical change is a change in state or activity. Phase transition or Natural action.

8 0

3 years ago

A mass is tied to a string and swung in a horizontal circle with a constant angular speed. show answer No Attempt If this speed

Liono4ka [1.6K]

Answer:

The tension in the string is quadrupled i.e. increased by a factor of 4.

Explanation:

The tension in the string is the centripetal force. This force is given by

$F = \dfrac{mv^2}{r}$

m is the mass, v is the velocity and r is the radius.

It follows that $F \propto v^2$ , provided m and r are constant.

When v is doubled, the new force, $F_1$ , is

$F_1 = \dfrac{m(2v)^2}{r} = \dfrac{4mv^2}{r} = 4\dfrac{mv^2}{r} = 4F$

Hence, the tension in the string is quadrupled.

8 0

3 years ago

(30 points) Air enters a compressor at 1 bar, 310 K, and is compressed adiabatically to 12 bar, 630 K. The air exiting the compr

SashulF [63]

Answer:

‍♀️‍♀️

Explanation:

6 0

3 years ago

ANSWER PLS NEED ASAP AS FAST AS HUMANLY POSSIBLE

Soloha48 [4]

Answer:

Should be B

Explanation:

As the light enters the prism at an angle, the glass causes the light to travel slower. The speed is affected by the frequency of the light. So each frequency is slowed by a different amount, causing the colors to separate.

Hope this helps!

6 0

3 years ago

ANSWER IN LESS THAN A MINUTE!! EASYY!​

ANSWER IN LESS THAN A MINUTE!! EASYY!