Answer:
If you use the same force to push a truck and a car, the car will have more acceleration than the truck because the car has less mass.
It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one. This means that more force is required to push the shopping cart.
When a person kicks a ball the person exerts force in a specific direction, that is the direction in which it will travel. In addition to this, the stronger the ball is kicked, the stronger the force we put on it and the further away it will travel.
Suppose two people are walking and among the two people, if one is heavier than the other, then the one weighing heavier will walk slower because the acceleration of the person weighing lighter is greater.
When riding a bicycle, the bicycle acts as mass and our leg muscles pushing on the pedals of the bicycle is the force.
Explanation:
Please help only have a short amount of time left!
Which of the meters illustrated will display the greatest amount of current?
Answer:
I think all will display the same value
Explanation:
Sorry if this is wrong
Answer:
I think it's option a. this is because,it has longer conductivity.
this might be wrong. I am just in jss2 but I read physics
Pls someone help me plss guys!!!
I will give you brainiest
Radioactivity is a part of our earth - it has existed all along. Naturally occurring radioactive materials are present in its crust, the floors and walls of our homes, schools, or offices and in the food we eat and drink. There are radioactive gases in the air we breathe. Our own bodies - muscles, bones, and tissue - contain naturally occurring radioactive elements.
Projectile Motion
a. Identify the variables (givens and unknown.) Remember to include the units.
B. Which kinematic formula should you use to solve?
C. Solve the problems.
An egg is thrown horizontally off the roof.
Which is 70 meters high, with an
initial velocity of 5.5 m/s. How long does it take to hit the ground? How far
does it go in the x direction?
3 variable
Variable Chart Given and Unknown?
PLEASE HELP ME FAST ITS 25 POINTS
Answer:thx
Explanation:
According to Jean Piaget, in what stage of cognitive development are children able to understand conservation tasks?
Answer:
Preoperational
Explanation:
According to Piaget's theory of cognitive development, the preoperational stage is the second stage. This stage includes children between the age group of 2 to 7 years. Children can understand conservation tasks and learn to manipulate various symbols during this stage.
So, the answer is the preoperational stage.
Answer:
B Preoperational
Explanation:
This is the answer the person above is correct!
This is for edge 2021/2022
Hope this helps!!
What kind of electricity is the buildup of electric charge on an object?
magnetic
static
both ^^
or None
What causes seafloor spreading, subduction, and the movement of
tectonic plates?
Answer:
Subduction happens where tectonic plates crash into each other instead of spreading apart. At subduction zones, the edge of the denser plate subducts, or slides, beneath the less-dense one. The denser lithospheric material then melts back into the Earth's mantle. Seafloor spreading creates new crust.
Explanation:
hope it helps i do not know if that is the kind of answer you wanted or not but i tried
A 2kg watermelon is dropped from a 4m tall roof a) use the appropriate kinematic equations to determine the instantaneous velocity of the watermelon as its strikes the ground below?
Answer:
8.85m/s
Explanation:
The potential energy the watermelon held before dropping is Ep=mgh=2*9.8*4=78.4J.
When it strikes the ground, all of its Ep will transfer into Ek, so 1/2*m*v^2=78.4.
We already knew that m=2, so insert that in, we will get the V^2=78.4 m/s, V=8.85 m/s
The foghorn blast from a big ship is a very loud sound . What is the best example of a very high pitched sound
Answer:
Whistle
Explanation:
High pitched sound is a type of sound that has a high-frequency sound wave or outstanding pitch than other sounds in the area of observation.
There are various examples of high pitch sound, some of them include:
Nails scratching on the blackboard, School bell, Rubber shoes squeaking against a basketball court, Fireworks.
The most common high pitch sound and usually the best example is WHISTLE.
A woman drives a golf ball off the tee to a speed of 28 m/s. The mass of the ball is 45 g and tIf the angle of the flight was initially 20ofrom the horizontal, how far would the ball go before it landed? (51 m) he time of contact was 6.0 ms.
Answer:
456
Explanation:
impulse = Force x (time of contact)
this isn't really much information but hope this helps !: )
Please help.....Which of the following is most likely the distance between the Milky Way and another galaxy?
22,926 miles
30 million kilometers
10.8 billion light years
19.2 astronomical units
Answer:
The answer would be 10.8 billion light years
Answer:
10.8 billion light years is most likely the distance between the Milky Way and another galaxy.
Hope this helps :)
Please help!! How is turning a door knob mechanical energy?
Answer:
Explanation:
It is mechanical energy because you are pushing the doorknob to the right you are manually doing it
Turning a knob is a form of mechanical energy. This is because, turning a knob requires rotational kinetic energy which is a form of mechanical energy.
What is Mechanical energy?Mechanical energy is the sum of the potential energy and the kinetic energy of a system. The principle of conservation of the mechanical energy states that if an isolated system is subjected only to the conservative forces, then the mechanical energy will be constant.
Turning a door knob requires some amount of rotational kinetic energy. The rotational speed due to this kinetic energy of the door knob and its moment of inertia combines to give the rotational kinetic energy.
Rotational kinetic energy of an object under rotation increases with the rotating speed and it can be passed on to the system when the turning speed of the object decreases.
Learn more about Mechanical energy here:
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weight is derived from which quantity?
Answer:
weight is derived from kilograms(kg)
If Speed = Distance / Time, then a marble rolling 49 cm in 7 seconds is
moving at
343 cm/s
.142 cm/s
7 cm/s
not moving at all.
Distance = 49
Time = 7
49/7 = 7
7 CM/S
Two waves are traveling through a tube. Wave X has an amplitude of 1 cm, and wave Y has twice the amplitude of wave X. The energy of wave Y is
A.
four times that of wave X.
B.
two times that of wave X.
C.
one-fourth times that of wave X.
D.
half times that of wave X.
Answer:
it is A
Explanation:
i had the question
____ works against gravity to keep a parachute open as it
glides downward.
A. Flight
B. Terminal velocity
C. Weight
D. Air resistance
Answer:
D
Explanation:
The air is catching against the parachute causes the person to not fall at deadly speeds.
Answer:
D. Air resistance (also called drag) slows it down. Photo: Parachutes are made from strong lightweight nylon and have to be packed very carefully if they're to open correctly when they're deployed.
Which quantity is most closely related to the speed of gas particles? (2 points)
A The temperature of the gas
B The number of molecules in the gas
C The density of the gas
D The total volume of the gas
Quantity is most closely related to the speed of gas particles is the temperature of the gas.
Specifically, the speed of the molecules in a gas is dependent on its temperature (the higher the temperature the faster the gas molecules move). Another way to think of it is that the temperature of a gas is a measure of the average kinetic energy of that gas.
What is temperature ?"Temperature is the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius. Temperature indicates the direction in which heat energy will spontaneously flow—i.e., from a hotter body (one at a higher temperature) to a colder body (one at a lower temperature)."
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Each lunar cycle has one full moon, in which the relative positions of Earth, the sun, and the moon form in a straight line
Complete Question:
Each lunar cycle has one full moon, in which the relative positions of Earth, the sun, and the moon form in a straight line. Which list represents the position of Earth, the sun, and the moon during a full moon?
Group of answer choices.
A. Earth, sun, moon
B. sun, moon, Earth
C. moon, sun, Earth
D. sun, Earth, moon
Answer:
D. sun, Earth, moon
Explanation:
A lunar eclipse is a phenomenon that occurs when the Earth comes between the Moon and the Sun thereby causing it to cover the Moon with its shadow.
Simply stated, lunar eclipse takes place when the Moon passes or moves through the Earth's shadow thereby blocking any ray of sunlight from reaching the Moon. Thus, the full moon appears deep red (blood moon).
Also, a lunar eclipse would occur only when the Sun, Earth, and Moon are closely aligned to form a straight line known as the syzygy.
There are three (3) types of lunar eclipse and these are;
1. Total lunar eclipse.
2. Partial lunar eclipse.
3. Penumbra lunar eclipse.
Each lunar cycle has one full moon, in which the relative positions of Earth, the sun, and the moon form in a straight line. Thus, the list which represents the position of Earth, the sun, and the moon during a full moon is sun, Earth, and moon
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (60pts)
Answer:
Weight
Explanation:
"An object will float if the buoyancy force exerted on it by the fluid balances its weight, i.e. if FB=mg F B = mg . But the Archimedes principle states that the buoyant force is the weight of the fluid displaced. So, for a floating object on a liquid, the weight of the displaced liquid is the weight of the object."
Hope this helps! :)
The image formed by the pinhole camera is smaller than that of the object
true or false
Answer: True? since it has a small hole it would depend on how far away the camera is to the object.
write the relation between horsepower and Watt?
Explanation:
Horsepower is related to watt as: 1 horsepower = 746 W = 750 W approximately. 1 horsepower (HP) = 750 watt (approx.) The power is one watt when one joule of work is done in one second.
Answer:
1HP = 746 watts
Explanation:
The relation between Horsepower and watt is that One Horse Power is equal to 746 Watts .
[tex]\large{\boxed{ \sf 1 HP = 746 Watts = 0.746 kW }}[/tex]
How are the ingredients in a mixture of iron filings and sand affected by being combined?
answer choices
1. Both the iron filings and the sand maintain their original physical properties when combined.
2. The physical properties of the sand change but those of the iron filings do not.
3. Neither the iron filings nor the sand maintain their original physical properties when combined.
4. The physical properties of the iron filings change but those of the sand do not.
Answer: Its A. Both the iron filings and the sand maintain their original physical properties when combined.
Explanation:
If the distance between 2 charged particles is double, the force between them changes by a factor of?
Answer:
See explanation
Explanation:
Given that;
q1 and q2 are the magnitudes of the two charges while r1 is the distance between the charges.
F1 =kq1q2/r1^2
Then,
F2 = kq1q2/(2r1)^2
F2 = kq1q2/4r1^2
So,
F2 = 1/4 F1
The force between the charges changes by a factor of 1/4.
help please help!!!!!!!!
1. Electron
2. Neutron
3. Nucleus
4. Atom
5. Molecule
A printer has a power of 100 W. It takes 30 seconds to print out a document. How much energy will it
have used?
100W translates to 100 watts consumed in 1 hour. Assuming the printer consumes electrical energy at a steady rate, then: 100 ÷ 60 = 1.6667 watts per minute. 1.6667 ÷ 2 = 0.8333 watts consumed in 30 seconds.
A printer has power of 100 W, and it takes time of 30 seconds to print out the document, then the power consumed in 30 seconds will be 0.8333 W.
What is Power?The quantity of energy moved or changed per unit of time is termed as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in historical texts. A scalar quantity is power.
Power is connected to other factors; for instance, the power required to move a land vehicle is equivalent to the sum of the vehicle's velocity, traction force on its wheels, and aerodynamic drag.
Assuming the printer consumes electrical energy at a steady rate, then:
100 ÷ 60 = 1.6667 watts per minute.
Now, calculate the power consumed in 30 seconds,
1.6667 ÷ 2 = 0.8333 watts.
Therefore, the power consumed in 30 seconds will be 0.8333 watts.
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30 points, brainiest, high school physics problem, please help.
7. 10 Kg of water at 90°C is cooled by mixing 20kg of water at 20°C. What
is the final temperature of the mixture?
(3850
Answer:
Please mark me as Brilliant
Explanation:
I shall solve both one by one
Case 1: 1 kg of water at 10° C
Let the final temperature be T° C , where T°C < 30°C.
Heat give out by 4.4 kg of water at 30° C to come down to T°C = 4400 g × 1 calorie/g/°C × (30- T)° C = (4400× 30 - 4400 T) calorie
Heat gained to raise temperature of 1kg of water at 10° to T° = 1000 g × 1 calorie/g/°C × (T -10)° C = 1000 T - 10,000) calorie
Heat gained = Heat lost
1000 T - 10,000 = 1,32,000 - 4400 T; ==> 54 00T = 1.42,000; T = 1,42,000/5400 = 26.3° C.
In case it is 1 kg of water at 10° C mixed with 4.4 kg of water at 30° C, the final temperature of the mixture would be T = 26.3° C.
Case 2: 1 kg of ice.
Ice is essentially at its melting point/freezing point ie at 0° C.
Let the temperature of mixture = T° C
Heat required to melt 1 kg (=1000 g of ice) at 0° C to water at 0° C = 1000 g × 80 calorie/g = 80,000 calorie
Heat require to raise temperature of 1000 g of water at 0° C to water at T° C = 1000g × 1 calorie/g/°C× (T -0)° C = 1000 T calorie
Heat gained = 80,000 + 1000 T
Heat lost by 4.4 kg of water at 30° C to cool to T° C = 4400 g × 1 calorie/g /° C × ( 30 - T)° C = 1,32,000 - 4400 T
Heat gained = Heat lost
80,000 + 1,000 T = 1,32,000 -4400 T
5400 T = 52,000/5400; ==> T = 9.63°C.
In case it is ice, the temperature of the mixture is T = 9.63° C.
Added: around 2 pm
how much energy is needed to melt 1.25 kg of water at its melting point?
2830 kj
5.23 kj
0 kj
416 kj
Answer:
416 kj
Explanation:
hope it helps
Answer:
416 kj
Explanation:
For this particular problem, we are not dealing with a temperature change, rather, we are dealing with a scenario in which we are melting ice. Hence, we need to use the delta H fusion equation:
q=m⋅ΔHfus
Hope that I could help.
Scattering occurs when a material emits light, and then re-emits the light in different directions.
true or false
If a car is moving with a speed of 5 km/h on a highway. Find the distance travelled by the car in 2 hours?.
Answer:
Distance = 10 kilometers.
Explanation:
Given the following data;
Speed = 5km/h
Time = 2 hours
To find the distance traveled;
Distance = speed * time
Distance = 5 * 2
Distance = 10 kilometers
Therefore, the distance travelled by the car is 10 kilometers.
City A is much larger than city B, but they are located at the same latitude and elevation. However, city A is receiving more rainfall than city B. Given this information, which statement most likely explains why?
Answer:
City A has more large buildings than city B, which force more air upward into the atmosphere.
Explanation:
The statement which most likely explains why city A is receiving more rainfall than city B despite its larger area is because "City A has more large buildings than city B, which force more air upward into the atmosphere."
This is evident in the fact that city A's large buildings contribute a stream of lift to raise warm, moist, surface air into the humid air right over the area, where it then transformed into rain clouds.