Answer:
thanks
Explanation:
Sarah launches her purse straight up in air with a velocity of 30.2m/s
How high will it go?
Answer: 46.53
Explanation:
If you walk 90 meters and you complete the walk in 50 seconds what is your speed?
Answer:
i think this is the answer
Explanation:
Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest.
Cindy’s average speed for the entire run is meters per minute. One kilometer is the same as 1,000 meters.
Answer:
200 m/min.
Explanation:
From the question given, we obtained the following data:
Total distance = 2 km
Total time = 2 + 4 + 1 + 3
Total time = 10 mins
Average speed =.?
Next, we shall convert 2 km to metre (m). This can be obtained as follow:
1 km = 1000 m
Therefore,
2 km = 2 km × 1000 m / 1 km
2 km = 2000 m
Therefore, 2 km is equivalent to 2000 m.
Finally, we shall determine the average speed of Cindy as follow:
Total distance = 2000 m
Total time = 10 mins
Average speed =.?
Average speed = Total distance /total time
Average speed = 2000 /10
Average speed = 200 m/min.
Therefore, the average speed of Cindy is 200 m/min.
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As you climb a mountain, the boiling point (temperature) of water:
1. decreases
2. remains at 100° C
3. increases
Answer:
1, decrease
Explanation:
At higher altitudes, air pressure is lower. When atmospheric pressure is lower, such as at a higher altitude, it takes less energy to bring water to the boiling point. Less energy means less heat, which means water will boil at a lower temperature at a higher altitude.
Give one specific example of matter changing one state to another
Answer:
water can change to a solid even though its a liquid
Explanation:when water freezes it turns into a solid
The ice cube floating in my sody is getting smaller and smaller.
There was a puddle of rain water on the ground by the side door this morning, but there's no puddle there now.
How far will you travel if you run for 30 seconds at 6m/sec?
How is a warm front different than a cold front? ANSWER NOW I ONLY HAVE 15 MINUTES LEFT! I will not give brainliest unless answered in time
Answer:
Warm fronts move more slowly and are less violent than cold fronts. They are associated with warm air moving over cold air and are more likely to produce large regions of light to moderate rain, drizzle or snow.
Explanation:
Plz guys answer my question
What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?
Answer:
v=53.3m/s
Explanation:
Ek=1/2mv²
7.81×10⁴=1/2×55.0v²
v= the square root of 7.81×10⁴/0.5×55.0
v=53.3m/s
The speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy is 53.29 m/s.
To find the speed, the given values are,
Mass m = 55 Kg
Kinetic Energy = 7.81x 10⁴ J
What is Speed?Speed is the rate of change of distance with time. It is a scalar quantity with magnitude both no direction.
Speed = Distance / Time m/s.
The unit is m/s or km/hr or mile/hr.
Distance covered is simply the length of the path traveled. The unit is m or km or miles.Time taken is the duration of an event. The unit is seconds or minutes or hour.Formula,
Kinetic energy = Ke = 1/2 mv²
When we solve for v,
v² = 2Ke/m
Substituting the given values,
v² = 2(7.81 x 10⁴) / 55
Simplifying,
v² = 15.62 x 10⁴ / 55
v² = 0.284 x 10⁴
v = 0.53291 x 10⁴
v = 53.29 m/s.
The speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy is 53.29 m/s.
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You toss a ball at 15m/s straight upward. How much time will the ball take to reach the top of its path
CAN SOMEONE PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
what is the winning game for badminton??? at least 5 sentence
Answer:
please give me more stars
Explanation:To win a game, a player must reach 21 points. However, if the game is tied at 20-20 (or 20-all) then you are required to win by two clear points. Unlike most sports, however, if the score becomes 29-29 (or 29-all), the player or team to score the 30th point will win the game.
whats the answers to this??
Answer: 14 centimeters
Explanation: she walks 4 units east, 6 units up, then 4 units west. If each unit is 1 centimeter that is 16 centimeters.
what is kinetice energy
Answer:
energy which a body possesses by virtue of being in motion.
Answer:
kinetic energy, simply, is movement energy. it is energy which an object posses for its motion. in order to accelerate the object force must be applied. examples include:
moving your hand a ball rolling runningWhy is speed a scaler quantity
Answer:
Speed is a scalar quantity it is the rate of change in the distance travelled by an object, while velocity is a vector quantity it is the speed of an object in a particular direction.
Write a summary paragraph of 200 words discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.
Summarize your results.
According to your data, was your hypothesis correct? (Be sure to refer to your data when answering this question.) If the hypothesis was not correct, what do the results of the lab indicate the correct answer is?
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Describe how the results might be applied in the real world.
Answer:
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Explanation:
This is what your experiment was intended to demonstrate or investigate. "As temperature rises, honey's viscosity falls."
What is an experiment?The experiment appears to investigate the relationship between honey viscosity and temperature, and after reading the question.
You must look at your experimental results here; it's likely that you discovered that viscosity does indeed drop as the temperature rises.
The final task at hand is to list the challenges and issues you encountered throughout the experiment and make suggestions for how to address them in order to conduct future experiments that are more successful.
Therefore, the temperature has a considerable influence on viscosity, however, the particular substance also affects this relationship.
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Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track and it took her 6 minutes total to complete. Which best describes her speed and velocity? A. Her speed is 4.4 m/s, and her velocity is 0 m/s B. Her speed is 1.1 m/s, and her velocity is 0 m/s C.Her speed is 0 m/s, and her velocity is 2400 m/s D. Her speed is 4.4 m/s, and her velocity is 4.4 m/s
Answer:
Her speed is 1.1 m/s, and her velocity is 0 m/s
Explanation:
Speed = Distance covered/Time
Given
Distance = 400m
Time = 6minutes = 6*60 = 360 secs
Substitute the given parameter into the formula;
Speed = 400/360
Speed = 1.1m/s
Since the track is a circular track, the displacement will be zero. She is only moving in a circular path (no direction)
Velocity = Displacement/Time
Velocity = 0/3600
Velocity = 0m/s
Hence her speed is 1.1 m/s, and her velocity is 0 m/s
Answer: Her speed is 1.1 m/s, and her velocity is 0 m/s
Explanation:
describe liquids and GASSES IN TERMS OF THERE VOLUME AND SHAPES
Answer:
Explanation:
liquids have definite volume
liquids do not have definite shape. The take the shape of the container in which they are kept.
gases do not have definite volume.
gases do not have definite shape. They take the shape of the container in which they are kept.
Hope this helps
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Explanation:
Liquids- Have definite volume
No definite shape(takes the shape of the container)
Gases- No definite volume
No definite shape(takes the shape of the container)
How do you calculate Mass using the formula for force?
Group of answer choices
acceleration plus force
Force divided by acceleration
force times acceleration
force minus acceleration
---------------------------------------------------------------
How do you calculate mass using the density formula?
Group of answer choices
density plus volume
density times volume
density minus volume
Density divided by the volume
---------------------------------------------------------------
How do you calculate distance using the speed formula?
Group of answer choices
Time plus speed
speed times time
speed divided by time
speed minus time
---------------------------------------------------------------
How do you calculate volume using the density formula?
Group of answer choices
Mass times density
Mass divided by the density
Mass minus density
Density divided by the mass
---------------------------------------------------------------
How do you calculate acceleration using the force formula?
Group of answer choices
Mass divided by force
Force times mass
Mass times force
force divided by the mass
what is the definition of observation.
Answer:
Observation: The action or process of observing something or someone carefully or in order to gain information.
Explanation:
Can I have a Brainllest please :)
Answer:
Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity.
Explanation:
I just googled this. hope it helps!
Why can we have faith in our scientific understandings? Why or why not?
15% input work is lost due to friction then what is the efficiency of machine?
Answer:
I think 50%
Explanation:
Because the efficiency of a machine is always less than 100%. And efficiency of a machine is 75%.
So, if 15% input work is lost due to friction then efficiency is maybe 50%.
Physics is Confusing :( pt 2
Answer:
C
Explanation:
yeah it is
!!PLS HELP ITS URGENT!!Lena is using water displacement to find the volume. The volume of water in a graduated cylinder is 30 ml. After Lena drops a small toy in the graduated cylinder, the volume of water rises to 37 ml. What is the volume of the small toy?
Answer:
7
Explanation:
Suppose you were designing an elevator. How could you use the concept of an Atwood machine to minimize the force required to move the elevator up and down? If possible, discuss your answer with your classmates and teacher.
Answer:
an elevator we can use a counterweight that has the same mass as the empty box,
Explanation:
An Atwood machine consists of two masses connected by a rope through a pulley, in this case the acceleration of the system is proportional to the difference in masses, in the case of equal masses the acceleration is zero.
In the design of an elevator we can use a counterweight that has the same mass as the empty box, in that case when there are no people in the elevator, the natural acceleration is zero and there is no need to apply any force and therefore no power is needed. the motor.
When you have people inside, the power of the motor is what you need to lift the people, not the box, this reduces the power needed by the elevator motor by a high factor.
Using Atwood machine concept, we can state that the elevator can use a system of counterweights that balance the weight inside the box and minimize the force required to move the elevator up and down.
We can arrive at this answer because:
An Atwood machine consists of a system of two masses that counterbalance each other.In this system, the acceleration is caused by the difference between these masses, if there are no differences between them, there is no acceleration of the system.In the case of the elevator, a counterweight system would provide a balance when there were people inside the box.This is because the counterweight would have the mass equal to the mass of the empty box and this would make the entire system not have acceleration.However, when people enter the box, there would be a difference in mass and the system would have acceleration, without forcing a greater force to do so, but using engine power.With that, we can say that an elevator can act as an Atwood machine.
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What is TRUE about a capitalist society?
The idea behind capitalism is that the free market of products and ideas is owned and driven by private citizens. A capitalist society is a social order in which private property rights and the free market serve as the basis of trade, distribution of goods, and development.
Answer:
In ideal terms: In a capitalist economic system, the owner of production is the individual, and the benefactors of production are first the individual and second the society. In a socialist or communist economic system, the owner of production is the state or the society, and the benefactor is the society.
- Approximately what are the coordinates of the Hawaii Hot
Spot?
(1) 50 N, 120 W
(3) 25 N, 158 W
(2) 25 N, 158 €
(4) 25 S, 158 E
Answer: (3) 25°N, 158°W
Explanation:
The Hawaii Hotspot is one of the most popular on the planet and is the reason the Hawaii islands were created as it created volcanoes under the Hawaii islands that erupted as the Pacific plate moved over them and then the lava cooled thereby forming the different Hawaii islands.
The approximate location of the hotspot is 25°N, 158°W in the pacific ocean.
A car weighs 2,000 kg. It moves along a road by applying a force on the road with a parallel component of 560 N. There are two passengers in the car, each weighing 55 kg. If the magnitude of the force of friction experienced by the car is 45 N, what is the acceleration of the car?
Answer:
The acceleration of the car is 4.10 m/s².
Explanation:
The acceleration of the car can be found using the following equation:
[tex] F = ma [/tex] (1)
Where:
F is the force
m is the mass
a is the acceleration
The force is:
[tex]F = F_{p} - F_{f}[/tex] (2)
Where:
F(p) is the parallel force = 560 N
F(f) is the force of friction = 45 N
By entering equation (2) into (1) we have:
[tex]F_{p} - F_{f} = (m_{c} + m_{p}*2)a[/tex]
[tex] 560 N - 45 N = (2000 kg + 55*2 kg)a [/tex]
[tex] a = \frac{2000 kg + 55*2 kg}{515 N} = 4.10 m/s^{2} [/tex]
Therefore, the acceleration of the car is 4.10 m/s².
I hope it helps you!
The sun and moon seem to move across the sky each day because of the earths blank on its axis
Answer:
The Earth Rotates on its axis
Explanation:
What happens to the times difference between primary and secondary waves
Answer: The time differences become bigger.
Explanation: Suppose a primary and secondary wave both travel a distance of 4,000 km before they are picked up by a seismograph.
Which of the following objects has the most gravity? A. a semi-truck B. A grain of sand C. Jupiter D. All of these have equal gravity
Answer:
C. Jupiter
Explanation:
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
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