Answer:
The upstroke is a mechanism that helps to raise the plunger and downstroke helps to help lower the plunger. On the up-stroke of the plunger, the lower valve opens and the upper valve is closed. Whereas, on the downstroke, the lower valve closes and the upper one opens.
write the differences between biomass energy and tidal energy
Answer: Tidal power has potential for future electricity generation.
Explanation: biomass energy-is renewable organic material that comes from plants and animals.
1 point
30. A ray passing through the centre of curvature of a concave mirror.
after reflection is reflected back along the same path. Which is the correct
figure for the above statement.
Explanation:
when the object is between the pole and focus
Force = Mass x Acceleration
i. Mass as subject.
ii. Acceleration as subject.
Answer:
1) mass = force / acceleration
2) acceleration = force / mass
Explanation:
Part 1)
Force = Mass x Acceleration
Divide both sides by acceleration
force / acceleration = mass
mass = force / acceleration
Part 2)
Divide both sides by mass
force / mass = acceleration
acceleration = force / mass
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Peace!If a ball is rolling at a velocity of 1.5 m/s and has a momentum of 10.0 kg times m/s, what is the mass of the ball?
Answer:
Mass of the ball, M = 6.667 kg
Explanation:
Given data:
Momentum, Mo = 10.0 kgm/s
Velocity of the rolling ball, V = 1.5 m/s
Mass of the body, M = ?
Momentum, Mo = Mass, M x Velocity, V
10.0 kgm/s = M x 1.5 m/s
Divide each side by 1.5 m/s
M = 10.0 kgm/s / 1.5 m/s
M = (6⅔) kg
:. Mass of the ball, M = 6.667 kg
A sprinter runs for 6.45 s at 7.44 m/s. How far does she get?
A. 0.867 m
B. 13.9 m
C. 1.15 m
D. 48.0 m
Answer:
D is the answer
Explanation:
6.45×7.44= 47.98800
Which if we round of we get 48m
Colulate the wavelength of i)a ball moving of 40m/s i i)A proton moving at 40 ms i i i) An election moving at 40m/s
Explanation:
[tex]thank \: you[/tex]
_________at any particular point in a liquid is _________ in all directions
Answer:
Pressure at any particular point in a liquid is transmitted in all directions
Explanation:
I hope you like my answer and my answer helped you .e) A escalator carries 60 people of average mass 70kg to a height of 5m in one minute. Find the power needed to do this? 4
Answer:
3500J/s
Explanation:
P=W/T
42000×10×5÷60
=3500J/s
A STONE IS THROWN VERTICALLY UPWARD WITH THE VELOCITY 25/s HOW LONG DOES IT TAKES TO REACH THE MAXIMUM HEIGHT?
Answer:
time taken to reach maximum height is 2.548 sec and Maximum height is 31.855 m
Explanation:
Initial velocity U= 25 m/s
at maximum height velocity, V= 0 m/s
Let the time taken to reach maximum height be t and maximum height be H.
V= U-gt
so 25-9.81.t=0
therefore t= 25/9.81 = 2.548 sec
Now,
H= Ut-1/2(gt^2)
=25x2.548-0.5x9.81x(2.548^2)
=31.855 m
Thank you
what is the difference between industrialized countries and developing countries
Answer: Developed nations are generally categorized as countries that are more industrialized and have higher per capita income levels. ... Developing nations are generally categorized as countries that are less industrialized and have lower per capita income levels.
Explanation: this is the source that i used to find the answer:
https://study.com/academy/lesson/economic-inequality-differences-in-developed-and-developing-nations.html
a=(v – u)/t
i. V as subject
ii. U as subject
iii. T as subject
Answer:
i.
[tex]a = \frac{(v - u)}{t} \\ v - u = at \\ v = at + u[/tex]
ii.
[tex]a = \frac{(v - u)}{t} \\ v - u = at \\ u = v - at[/tex]
iii.
[tex]a = \frac{(v - u)}{t} \\ ta = v - u \\ t = \frac{(v - u)}{a} [/tex]
I hope I helped you^_^
The quantity of matter inside the body is?
Answer:
MASS
Explanation:
mass is the quantity of matter contained in the body.
wat is the difference between resultance and equilibrum
Explanation:
A resultant force is the sum of the forces on an object.
Forces are said to be in equilibrium when the resultant force is zero. This means the object will not accelerate.
The quantity of matter inside the body is?
Answer:
mass is the quantity of matter inside the body
Answer:
The mass of a body is the quality of matter it contains
en and Karen are travelling for the weekend. They both leave from Jen's house and meet at their destination 250 miles away. Jen drives 45mph the whole way. Karen drives 60mph but leaves a half hour after Jen. How long does it take for Karen to catch up with Jen
Answer:
1 1/2 hours. for Karen to catch Jen.
Explanation:
Karen needs to make up 22.5 km which is the distance Jen travels in 1/2 hour.
The distance where they meet must be equal from the starting point.
Jen
Jen is out 1/2 hour longer.
Let the Karen's time = t
d = r * t
d = 45 * (t + 1/2 hour)
Karen
d = 60 * t
The distances are equal
so
Meeting time
45*(t + 1/2 hour) = 60 * t
45t + 22.5 = 60t Subtract 45t from both sides
22.5 = 15t Divide by 15
t = 22.5 / 15
t = 1 1/2 hours = 1.5 hours.
Now you have to interpret the results.
Remember that Jen has travelled 1/2 hour more than Karen
Her time is 2 hours.
Karen's time is 1.5 hours.
Jen travels 2 hours which is 2 * 45 = 90 miles
Karen travels 1 1/2 hours which is 1.5 * 60 = 90 miles
Schrodinger's cloud model for electrons is an alternate theory to Bohr's orbit model. True or False
Answer:
it's true...
Explanation:
hope it helps you
a body is moving with uniform velocity of 15 m/s calculate its velocity after it travels 100m in 20 second
Since the body is moving with uniform velocity, its velocity after it travels 100 m in 20 s is 15 m/s.
Hope it helps! Please do comment
standard atmospheric pressure define
Answer:
The atmosphere exerts pressure of about 10 power 5 and Nm power-2 or 760 mm of HG at sea level is known as standard atmospheric pressure
Answer:
(atm) unit of measurement equal to air pressure at sea level, about 14.7 pounds per square inch. Also called standard atmospheric pressure. atmospheric pressure. Noun. force per unit area exerted by the mass of the atmosphere as gravity pulls it to Earth.
how do i solve this?
Answer:
hmmm i dont know....
Explanation:
i just wanted free point. TANKS YOU SIR!!
A wombat runs south in a straight line with an average velocity of 5 m/s for 4
minutes and then with an average velocity of 4 m/s for 3 minutes in the same
direction.
What is the wombats total displacement?
What is the average velocity during that time?
We have that
The wombats total displacement is
[tex]d_t=2100m[/tex]
The average velocity during that time is
[tex]v_{avg}=5m/s[/tex]
From the question we are told that:
initial Velocity [tex]V_1=5m/s[/tex]
initial Time [tex]T_1=4min=>240sec[/tex]
Final Velocity [tex]V_2=4m/s[/tex]
Final time [tex]T_2=3min=>180sec[/tex]
a)
Generally, the equation for displacement is mathematically given by
d_t=(Initial +final) displacement
Where
initial displacement
[tex]d_1=V_1*t_1\\\\d_1=5*240[/tex]
[tex]d_1=1200m[/tex]
Final displacement
[tex]d_2=V_2*t_2\\\\d_2=5*180[/tex]
[tex]d_2=900m[/tex]
Therefore
[tex]d_t=(Initial +final) displacement[/tex]
[tex]d_t=1200+900[/tex]
[tex]d_t=2100m[/tex]
b)
Generally, the equation for Average velocity is mathematically given by
[tex]v_{avg}=\frac{d_t}{t_1+t_2}[/tex]
[tex]v_{avg}=\frac{2100m}{240+180}[/tex]
[tex]v_{avg}=5m/s[/tex]
in conclusion
The wombats total displacement is
[tex]d_t=2100m[/tex]
The average velocity during that time is
[tex]v_{avg}=5m/s[/tex]
For more information on this visit
https://brainly.com/question/11934397
Which characteristic accounts for the fact that red lights in dark rooms and DO NOT expose negatives during developing?
Answer:
the long wavelength and not focused on the negatives.
An ambulance is currently traveling at 15m/s, and is accelerating with a constant acceleration of 5 m/s^2. The ambulance is attempting to pass a car that is moving at a constant velocity of 30m/s. How far must the ambulance travel until it matches the car’s velocity?
Using 3rd equation of kinematics
[tex]\\ \rm\longmapsto v^2-u^2=2as[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{v^2-u^2}{2a}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{30^2-15^2}{2(5)}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{900-225}{10}[/tex]
[tex]\\ \rm\longmapsto s=\dfrac{675}{10}[/tex]
[tex]\\ \rm\longmapsto s=67.5m[/tex]
Bob the American has just driven his car across the Canadian border when he sees a
speed limit sign of 85 kilometers/hour. His speedometer only shows his speed in
miles/hour. Convert the kilometers to miles so that Bob doesn't get a speeding ticket.
(Conversions: 1 mile = 5280 ft; 1 foot = 12 in.; 1 inch = 2.54 cm
Answer:
it equals 53 miles per hour
Every action force has an opposite and equal reaction force. Determine which of these are action/reaction pairs. Check all that apply.
Answer:
where are the questions /pairs
Explanation:
Answer:
A girl leans against a wall and the wall pushes on the girl.
A baseball hits a glove and the glove pushes on the ball.
A cat rubs up against a tree and the tree pushes against the cat
Explanation: i finished the question
Why is the sun considerad as the main source of energy?
Answer:
The sun is considered as the main source of energy since it is the source of nearly all the earth's energy. Plants produce food using sunlight, and the food we get from plants and animals also has its primary sunlight source.
Hoped it helps you.
Answer:
It is because it supplies most of our energy that we use today, directly or indirectly. It radiates light and heat or solar energy, which makes it possible to exist life on earth.
what's is meant by relative motion?
Relative motion means a motion relative to a reference point. We can also say, relative motion means motion referred or observed from a reference point.
For example, Alex is in a train and Ace is at the station, when the train starts moving, for Ace it is moving at a speed of 10 m/s, but for Alex it is moving at 0 m/s, or we can say that it is at rest for Alex, but in motion for Ace. This is relative motion.
Answer:
relative motion is the motion of an object compared to that of another object.for example two cars driving in the same highway in the same direction.
I hope this helps
A car has steady speed of 8m/s .How long does the car take to travel 160m
Answer:
the time taken by the car to travel 160 m = 160/8= 20 s
Hope it helps!!!!!!
Thank you
iii A load of 2.5 N is hung on the spring.
1. What does the letter N stand for?
[1]
2. Use the graph to estimate the overall length in mm of the spring when 2.5 N is hanging from it. [2]
[Cambridge IGCSE Physics 0625/22 Question 2, October/November, 2010)
Compare and contrast scientific inquiry "skill and process".
Answer:
The inquiry process takes advantage of the natural human desire to make sense of the world... This attitude of curiosity permeates the inquiry process and is the fuel that allows it to continue. Process skills are not used for their own sake.
Physical Science Essential Question: How can the scientific process be used to help us investigate and understand natural phenomena? Elaborate: Challenge students to pretend they are on the scientific journey to develop a vaccine to stop the zombie apocalypse and they need to design an experiment as a result of working in a laboratory. Ask the students to write 2-3 paragraphs describing what they would test and why might this be important in science and the real world. They might need to include the following terms: Experimental design
Test variable
•Outcome
•Control variable
•Hypothesis
•Testable
•Graphs and charts
Answer:
It C 100% bc i alrweady learn this
