Answer:
The pressure of the air molecules inside the pen cap increases and the volume occupied by the air decreases such that the combined volume occupied by the pen cap and the air volume reduces while the combined mass of the pen cap and the air molecules remain the same
Given that density = The mass/Volume, we have that the density varies inversely as the volume, and as the volume reduces, the density increases
Upon squeezing, therefore, as the new combined density of the pen cap and the air molecules rises to more than the density of the water in the bottle, then, the pen cap air molecule is relatively more denser than the water, which will result in the pen cap sinking to the bottom of the bottle
Explanation:
Describe a ways car manufacturers try to reduce drag and why.
Aerodynamics is a way to reduce drag that uses car manufacturers.
What is aerodynamic ?
Aerodynamics is the motion of the air. airplane flies cause of aerodynamics.
Aerodynamics is the study of forces that are resulted by motion of the air.
To reduce the aerodynamic drag further, the manufacturers use character lines on the exteriors of the car's body right from its concept stage. These lines help the air to pass smoothly over the body and thus, reducing the air resistance.
cars have flat vertical face in front. When it moves through air, drag force directly proportional to the velocity applies on the car which opposes motion of the car. after studding aerodynamics when we make triangular like shape to the front body of the car, it cuts the air and front air goes from side of the car which reduces oppose to the motion, and car can have more speed.
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Calculate the mass of a lorry that has a momentum of 4600 kg m/s and a velocity of 15m/s. Give your answer to two decimal places
PLZZZ HELP
A boat moving at a constant speed travels 15 meters in 8 seconds. How far does it travel
in 40 seconds?
75 meters
53 meters
335 meters
480 meters
marks
An object can travel a distance of 20 meters at the same time that it has a displacement of zero.
A. True
B. False
Answer:
Yes
Explanation:
Yes, displacement can be zero even if the distance is not zero. For example, when a body is thrown vertically upwards from a point A on the ground, after some time it comes back to the same point A.
It takes a force of 50 N to give a body an acceleration of 10 m/s2. What is the mass of the body?
Answer:
The answer is 5 kgExplanation:
The mass of the body can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
We have
[tex]m = \frac{50}{10} \\ [/tex]
We have the final answer as
5 kgHope this helps you
Three resistors are placed in series. They have the following resistances: R1 = 20 ohms, R2 = 20 ohms, R3 = 10 ohms. What
current would be moved through this circuit by a 5-V power supply?
Answer:
0.10 A
Explanation:
Which statement best describes the general movement of air masses?
A.
They move from areas of high humidity to areas of low humidity.
B.
They move from areas of high altitude to areas of low altitude.
C.
They move from areas of low temperature to areas of high temperature.
D.
They move from areas of high pressure to areas of low pressure.
Answer:
d
Explanation:
i looked it up
The_____ of a substance is the temperature at which a solid begins to liquefy
Answer:
Melting point
Explanation:
when a solid turns to a liquid, it is melting
The ___ of the element always start with capital letter.
iekeiieurk384k3irkrurj484jr
Function of bones in the body?
Any of the pieces of hard whitish tissue making up the skeleton in humans and other vertebrates.
The calcified material of which bones consist
an object has volume of 5cm and a mass of 20 g what is the density of the object
match the term with its definition
At lunch, the babysitter gives Tanya and Damien each a chocolate candy. Tanya puts her candy on her plate. Damien saves his candy in his pocket. After lunch, Damien discovers his candy has melted. Which statement accurately compares the atoms in the two candies?
The atoms in Damien’s candy have less energy.
The atoms in Damien’s candy are vibrating faster.
The atoms in Damien’s candy are unable to move.
Answer:
The atoms in Damien’s candy are vibrating faster.
When the atoms in something are going at rapid speeds they create heat.
Which mineral is commonly found in igneous rocks?
A. halite
B. feldspar
C. gypsum
D. talc
Answer:
d
Explanation:
3. Bamey is walking with all his good friends. If he began walking away from Lucy 12 seconds ago at an average speed of 1.5 m/s and is now 25 m from Lucy, the how far from her was he when he began walking?
Answer:
7 meters away
Explanation:
12 x 1.5 = 18
25 - 18 = 7
What is the acceleration of a 50kg object pushed with a force of 500 newtons?
Answer:
10
Explanation:
Acceleration = Force / Mass
500 N / 50 Kg = 10
1. Sally rides her bike to school which is 8.0 km from her house. If it takes 15 minutes for her
to reach her destination, what is her average speed in km/hr?
Name 2 types of electric circuits based on their connection pattern
Answer:
When there are two or more electrical devices in a circuit with an energy source, there are a couple of basic ways by which we connect them. They can either be connected in series or parallel
[tex]\huge\bold\green{Answer:-}[/tex]
Series Circuit:-A series circuit has only one path for electricity to flow from one point to another. The amount of electricity in the circuit is consistent throughout any component in the circuit. When electricity flows through a series circuit, its rate of flow (speed) will never fluctuate. The total resistance of a series circuit equals the sum of individual resistances. The more resistors that a series circuit has, the more difficult it is for electrons to flow.
Parallel circuit:-A parallel circuit has multiple paths for electricity to flow from one point to another. According to website All About Circuits, “all components are connected between the same set of electrically common points.” Often, resistors and sources will be connected between two sets of electrically common points. In a parallel circuit, electricity can flow in multiple directions horizontally and vertically. The components of a parallel circuit will have the same voltage across their ends and will have identical polarities.
FOLLOW ME ♥️Which describes one event that causes an eclipse?
Earth’s rotation on its axis
shadows from clouds covering Earth
Earth’s shadow covering the moon
the gravity from the moon and Sun pulling in the same direction
Answer:
Earths shadow covering the moon would create a lunar eclipse.
Explanation:
because i just know
A lunar eclipse is occur when Earth’s shadow is covering the moon.
What is eclipse?An eclipse happens when one astronomical body like Earth or moon blocks light from or to another.
What is lunar eclipse?A lunar eclipse is caused by Earth blocking sunlight from reaching the moon and causing a shadow across the lunar surface.
What is solar eclipse?Sometimes when the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse.
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The real advantage to hydrostatic weighing is that it __________.
A.
can be done anywhere with no equipment
B.
gives one of the most accurate measurements of body fat
C.
uses calipers to measure body fat
Answer:
B. gives one of the most accurate measurements of body fat
Answer:
B. ) gives one of the most accurate measurements of body fat
A granite monument has a volume of 25,365.4 cm. The density of granite is 2.7 g/cms. Use this information to calculate the mass of the monument to the nearest tenth. The mass of the granite monument is
Answer:
m = 68,486,6 g is the answer.
Explanation:
To calculate mass you use formula:
m= V*r
To avoid remembering this formula you can see the type of unit on each given variable. We can see that we have g/cm^3 and cm^3. If we multiply them, we negate cm^3 and cm^3 and we are left with g which is unit for mass.
Hope I helped! ☺
Max and Jimmy continue jumping on a trampoline. When they jump at the same time, Max makes a wave crest and Jimmy makes a wave trough. What type of wave interaction occurred?
Answer:
The type of wave interaction occurred is destructive interference
Explanation:
Given that,
Max and Jimmy jump at same time.
Wave crest makes by Max and wave trough makes by Jimmy.
We need to find the type of wave interaction occurred
According to given data,
We know that,
If the wave crest and wave trough are interacted to each other then the interaction is destructive interference.
If the wave crest and wave trough are interacted with crest and trough then the interaction is constructive interference.
So, we can say that if the wave crest and wave trough are interacted to each other then the interaction is called destructive interference
Hence, The type of wave interaction occurred is destructive interference
Answer:
destructive interference
Explanation:
Sally accelerates a 250 kg cart at 3 m/s/s. What must be
the net force?
What is this question asking you to find?
Cool down math
Which line has a slope of 1?
The line that goes up by 1 and right/left by 1. Hope this helps
A dog walks 21 m north and then walks 35 m west to bury a bone. What is the displacement of the dog?
Answer:
40.8 m North West.
Explanation:
Please see attached photo for diagram.
In the attached photo, R represent the displacement of the dog.
The displacement (R) of the dog can obtained by using the pythagoras theory as illustrated below:
R² = 35² + 21²
R² = 1225 + 441
R² = 1666
Take the square root of both side.
R = √1666
R = 40.8 m North West.
Therefore, the displacement of the dog is 40.8 m North West.
Currently, the world population is about:
A. 7 billion
B. 450 million
C. 1.2 trillion
D. 700 million
3. What is the acceleration of a 10 kg mass pushed by a 5 N force?
Answer:
F=ma
Plug it in:
5=10a
5/10=(10a)/10
.5m/s²=a
Explanation:
Brainliest?
Answer:
[tex]\frac{1}{2} \frac{m}{s^2}[/tex]
Explanation:
Recall the equation F = ma. We want to find a, and we already know F and m, so we can plug those in. [tex]5N = 10kg \cdot a -> a = 5N/10kg = \frac{1}{2} \frac{m}{s^2}[/tex]
an object falls from a high building and hits the ground in 9.0 seconds.ignoeing air resistance,what is the distance that it fell?
Answer:
kinematic eq. d = Vi*t + 1/2a*[tex]t^{2}[/tex]
Explanation:
Vi=0
d=1/2 a*[tex]t^{2}[/tex]
d= 1/2(9.8)[tex]0.9^{2}[/tex]
d=3.969 m
The distance from which the object falls is 393.9 meters.
Given that, an object falls from a high building and hits the ground in 9.0 seconds and air resistance = 0
So the distance can be calculated by the formula given below.
[tex]s = vt + \dfrac{1}{2} at^2[/tex]
Where, [tex]s[/tex] is the distance in meters, [tex]t[/tex] is time (in seconds) taken by the object in motion, [tex]a[/tex] is the acceleration of the object in meter per second square and [tex]v[/tex] is the final velocity in meter per second.
In this case, object falls from high building to the ground so the final velocity would be zero. Gravitational acceleration is -9.8 meter per second square.
Substituting the values in the above formula,
[tex]s = (9.0\times0) + \dfrac{1}{2}(-9.8\times(9.0)^2)\\s = 0 + (-9.8\times81\times0.5)\\s = 396.9 \;\rm m[/tex]
The distance from which the object falls is 393.9 meters.
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A bicycle has a mass of 10kg and an acceleration of 2m/s². What is the net force of the bicycle?
20 m/s
20 m/s
5 N
5 N
0.2 m/s
0.2 m/s
20 N
Answer:
The answer is 20 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
Force = mass × accelerationFrom the question
mass = 10 kg
acceleration = 2 m/s²
We have
Force = 10 × 2
We have the final answer as
20 NHope this helps you
A box has pushed across the floor for 5.2 M with a 48 N force how much work is done?
