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andreev551 [17]
2 years ago
9

How do you do this? Plz help answer

Physics
1 answer:
Contact [7]2 years ago
7 0

Answer: Really

Explanation:

Just look it up for this page and maybe you will find an anwser sheet.

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A 250 g beach ball rolls across the sand with a speed of 11.16 km/h. First convert units to kg and m/ then determine the momentu
yuradex [85]

Answer:

0.775 kg-m/s

Explanation:

Convert the units to the right unit forms necessary

250 g -> 0.25 kg

11.16 km/h -> 3.1 m/s

Now use the formula:

                         velocity

                   mass /  

momentum  /    /

       \           /    /

         \       /    /

          p = mv

p = 0.25 × 3.1 = 0.775 kg-m/s

Hope this helps you!

Bye!

6 0
3 years ago
Is jacob barnes a turd face?
aleksandrvk [35]
Yes everyone knows this
3 0
3 years ago
Read 2 more answers
a race car driver must average 203 km/h over the course of a time trial lasting ten laps. If the first nine laps were done at 19
sashaice [31]

Answer:

speed for last lap is 247.89 km/h

Explanation:

given data

velocity v1 = 203 km/h

velocity v2 = 199 km/h

no of lap n = 10

to find out

average speed for last lap

solution

we consider here distance d for 1 lap

so in first 9 lap time taken is

t1 = distance / velocity v2

t1 = 9d / 199    ...............1

and

for 10 lap time is

t2 = 10d / 203   .............2

so from 1 and 2 equation time for last lap

last lap time t3  = t2 - t1    

t3 = 10d / 203  -  9d / 199

t3 = 0.004034 d

so speed for last lap is

speed = distance / time

speed = d / 0.004034 d

speed = 247.89 km/h

so speed for last lap is 247.89 km/h

4 0
3 years ago
An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
Natalija [7]

A photoelectric cell is an electronic device which is used to convert light energy into electric energy.The operation of this device is based on photoelectric effect.

Light of suitable frequency i.e greater or equal to threshold frequency will fall on the cathode maintained at negative potential.The electron emission will take place and these electrons are drifted towards the anode which is at positive potential.

Here,only those radiations will be capable of emitting electrons irrespective of surface barrier of metals whose energy is greater than the work function.

We know that the radiation having long wavelength has least energy as energy and wavelength are inversely proportional to each other.

Mathematically\ energy\ E=\frac{hc}{\lambda}

Here h is the Planck's constant,c is the velocity of light.

Here we have been given red light and blue light.

In the visible spectrum of radiation, the red light has longer wavelength than all other colors of light.Hence blue light has more energy as it's wavelength is less as compared to red light.

Hence, the blue light will activate the most and red the least.

3 0
2 years ago
Read 2 more answers
What is the net force on a water bottle?
Bad White [126]

Answer:

if it is not moving it is zero, like all things that aren't in motion

Explanation:

4 0
2 years ago
Read 2 more answers
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