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katrin2010 [14]
3 years ago
12

suppose the pilot starting again from rest opens the throttle part.way at constant acceleration the airboat then covers a distan

ce of 60.0m in 10.0s find the net force action on the boat​
Physics
1 answer:
mr_godi [17]3 years ago
3 0

Answer:

Acceleration is 1.2 m/s^2.

Explanation:

initial velocity, u = 0

distance, d = 60 m

time, t = 10 s  

Let the acceleration is a.

use second equation of motion

s= u t +0.5 at^2\\\\60 =  0 + 0.5 \times a \times 10\times 10\\\\a = 1.2 m/s^2

Now according to the Newton's second law

Force = mass x acceleration

Let the mass is m.

F = m x 1.2 = 1.2 m Newton  

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To what temperature will a 79.0 g piece of glass raise if it absorbs 9457 calories of heat and its specific heat capacity is 0.5
ruslelena [56]

Answer:

T_final = 279.4 [°C]

Explanation:

In order to solve this problem, we must use the following equation of thermal energy.

Q=m*C_{p}*(T_{f}-T_{i})

where:

Q = heat = 9457 [cal]

m = mass = 79 [g] = 0.079 [kg]

Cp = specific heat = 0.5 [cal/g*°C]

T_initial = initial temperature = 40 [°C]

T_final = final temperature [°C]

9457 = 79*0.5*(T_{f}-40)\\239.41=T_{f}-40\\\\T_{f}=279.4[C]

8 0
3 years ago
A father is homo….zygou dominant for green eyes, the mother is heterozygous. How many of the offspring will have green eyes?
Olin [163]

Answer:

100%

Explanation:

Father - EE

Mother - Ee

8 0
3 years ago
Kristen is running a half marathon. By her tenth minute of running, her breathing rate has increased from her resting rate.
pashok25 [27]
They need more oxygen to function, so gas exchange needs to increase
7 0
3 years ago
Read 2 more answers
Please help me anything will help
spin [16.1K]
Your answer is C) The speed of sound is higher in solids than in liquids. 
6 0
3 years ago
A heat pump absorbs heat from the atmosphere at a rate of 30 kW. If work is being done to run this heat pump at a rate of 7.7 kW
Volgvan

Answer:

Option D 3.9

Explanation:

First, you need to use the correct equation which is the following:

COP = Q/W

Where:

Q = heat absorbed

W = work done by the pump

COP = coefficient of perfomance

We have all the data, so, all you need to do is replace in the above expression and you shoould get the correct result:

COP = 30 / 7.7

COP = 3.896

This result you can round it to 3.9. option D.

8 0
3 years ago
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