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Bingel [31]
3 years ago
6

Question 3

Physics
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

Power = 2.5kW

Explanation:

Given

Mass = 200kg -- mass of tub

Energy = 200,000J

Time = 80s

Required

Determine the amount of power needed

Power is calculated as thus:

Power = \frac{Energy}{Time}

Substitute values for Energy and Time

Power = \frac{200,000J}{80s}

Power = 2500W

Divide by 1000 to convert to kW (kilowatt)

Power = 2.5kW

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A student holds an egg outside of an open window and let's go. The window is 40 meters above the ground and the egg is falling u
melisa1 [442]

The distance traveled by the egg after 2 seconds is 19.6 m.

The given parameters:

  • <em>Height of the window, h = 40 m</em>

The distance traveled by the egg after 2 seconds is calculated as follows;

h = v_0_y t + \frac{1}{2} gt^2\\\\

where;

  • <em />v_0_y<em> is the initial vertical velocity of the egg = 0</em>
  • <em>g </em><em>is acceleration due to gravity = 9.8 m/s²</em>
  • <em>t </em><em>is the time of motion, = 2 s</em>

h = 0 \ + \ \frac{1}{2} \times 9.8 \times (2)^2\\\\h = 19.6 \ m

Thus, the distance traveled by the egg after 2 seconds is 19.6 m.

Learn more about second equation of motion here: brainly.com/question/7977693

5 0
3 years ago
Hazardous wastes are placed into categories to aid in _____.
torisob [31]
The waste that poses substantial or potential threats to public and environment health
Hazardous waste are actually defined as RCRA in 40 CFR 261 the the four hazardous traits are 
ignitability 
reactivity 
corrosivity  
toxicity 
i think its b
4 0
3 years ago
Read 2 more answers
3. Light travels from the Sun to Earth in 8.3 min. Given that the speed of light is 3.00108 m/s, what is the distance in meters
nasty-shy [4]

Answer:

13

Explanation:

13.0120481928 it is the distance

4 0
3 years ago
Calculate the wavelength of the electromagentic waves with the given frequencies, and determine the type of electromagnetic radi
ololo11 [35]

To develop this problem we require the concepts related to wavelength and its expression to calculate it.

The wavelength is given by

\lambda =\frac{c}{f}

Where,

c=3*10^8 m/s light velocity

f = frequency.

Our values are given by,

f_1=4.38*10^{14}Hz

f_2= 4.14*10^{20}Hz

f_3 = 3.24*10^{12}Hz

Then,

\lambda_1=\frac{3*10^8}{4.38*10^{14}}= 6.8493*10^{-7}m Visible

\lambda_2=\frac{3*10^8}{4.14*10^{20}}= 7.24*10^{-13}m Gamma Ray

\lambda_3=\frac{3*10^8}{3.24*10^{12}}= 9.259*10^{-5}m Infrared

<em>*Note the designation on the type of rays that are, can be found in consulted via On-line or in the optical books referring to the electromagnetic spectrum table with their respective ranges.</em>

5 0
4 years ago
How long does it take an airplane to fly 1200 miles if it maintains a speed of 300 miles per hour
sdas [7]

Answer:

The answer is

<h2>4 hrs</h2>

Explanation:

To find the time taken we use the formula

t =  \frac{d}{v}  \\

where

d is the distance covered

v is the velocity

t is the time

From the question

d = 1200 miles

v = 300 mi/hr

We have

t =  \frac{1200}{300}  =  \frac{12}{3}  \\

We have the final answer as

<h3>4 hrs</h3>

Hope this helps you

5 0
3 years ago
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