Answer:
a. 2500 cm³.
b. 2.5 litres.
Explanation:
Given the following data:
Density = 0.8g/cm³
Mass = 2000g
To find the volume of the petrol;
Density can be defined as mass all over the volume of an object.
Simply stated, density is mass per unit volume of an object.
Mathematically, density is given by the equation;
[tex]Density = \frac{mass}{volume}[/tex]
Making volume the subject of formula, we have;
[tex]Volume = \frac{mass}{density}[/tex]
Substituting into the equation, we have:
[tex]Volume = \frac{2000}{0.8}[/tex]
Volume = 2500 cm³
a. The volume of the petrol in the can in cubic centimeters (cm³) is 2000.
b. The volume of the petrol in the can in litres;
1000 cm³ = 1 litre
2500 cm³ = x litres
Cross-multiplying, we have;
1000x = 2500
x = 2500/1000
x = 2.5 litres.
Therefore, the volume of the petrol in the can in litres is 2.5.
Chemistry Sem 2
Points Possible: 20
Name: Caleb Peterson
Date:
1. Several solids, liquids, and gases can be found in your home. List three
examples of each. (9 points) Think about where solids, liquids, and gases might
be found in your refrigerator, bathroom, or basement/garage.
Answer:
Solids - Bricks , wood , Pottery, Bucket
Liquid - Water, soap, Sanitizers.
Gases - Aerosol in Deodorants, Chlorofluorocarbons in Fire extinguishers , Butane in lighters.
Batteries are usually identified by their voltage.
Which battery would be able to give 18 joules of energy to 12 coulombs of charge?
Question 7 options:
1.5 Volt battery
216 Volt battery
9 Volt battery
12 Volt battery
6 Volt battery
3 Volt battery
Answer:
Explanation:
Given parameters:
Electrical energy = 18J
Quantity of charge Q = 12C
Unknown:
Voltage = ?
Solution:
The expression of electrical potential energy is given as:
Electrical potential energy = [tex]\frac{1}{2}[/tex] c v²
c is the quantity of charge
v is the voltage
18 = [tex]\frac{1}{2}[/tex] x 12 x v²
18 = 6v²
v² = 3
v = 1.7v
Consider a 2 m wide and 5 m long slab resting on flat, fixed, earthen bed. The slab is 20 cm thick with uniform properties. You may assume the slab is much longer and wider than it is thick. Write the reduced form of the governing equation for the slab. Clearly identify your coordinate system on a sketch and state your assumptions identifying which terms you are eliminating and why.
Answer:
Explanation:
The coordinate sketch for the system is shown in the attached file below. Also, in the cartesian coordinate system, since the height is less than the length and width, we did neglect the height. Thus, we eliminate the height and converted it to a two-dimension.
What is the kinetic energy of a 30 kg dog that is running at a speed of 8.6 m/s (about 19 mi/h)?
Answer:
Uhm thags hsed
Explanation:
Dkrr
Two loudspeakers face each other, vibrate in phase, and produce identical 406 Hz tones. A listener walks from one speaker toward the other at a constant speed and hears the loudness change (loud-soft-loud) at a frequency of 2.86 Hz. The speed of sound is 343 m/s. What is the walking speed
Answer:
1.21 m/s
Explanation:
Given :
2 loudspeakers
F2 - F1 = 2.86 Hz
Speed of sound, V = 343
Fo = frequency when listener is at rest = 406Hz
To obtain the walking speed Vo, speed as observer moves away from speaker ;
Vo = [(F2 - F1) * V] ÷ 2 * Fo
Vo = [2.86 * 343] ÷ (2 * 406)
Vo = 980.98 / 812
Vo = 1.2081034
Vo = 1.21 m/s
how does different color show exist
Answer:Light is made up of wavelengths of light, and each wavelength is a particular colour. The colour we see is a result of which wavelengths are reflected back to our eyes. The visible spectrum showing the wavelengths of each of the component colours. The spectrum ranges from dark red at 700 nm to violet at 400 nm.
Explanation:
hope it helps
Answer:When light hits an object, the object reflects some of that light and absorbs the rest of it. Some objects reflect more of a certain wavelength of light than others. That's why you see a certain colour. For example, a lemon reflects mainly yellow light.
Explanation:
the angular speed of an automobile engine is increased at a constant rate from 1300rev/min to 2000rev/min in 3s (a) what is its angular acceleration in revolutions per minute squared
Answer:
please find attached pdf
Explanation:
Milk with a density of 1020 kg/m3 is transported on a level road in a 9-m-long, 3-m-diameter cylindrical tanker. The tanker is completely filled with milk (no air space), and it accelerates at 4 m/s . If the minimum pressure in the tanker is 100 kPa, determine the maximum pressure difference and the location of the maximum pressure. Answer: 66.7 kPa
Solution :
Given data is :
Density of the milk in the tank, [tex]$\rho = 1020 \ kg/m^3$[/tex]
Length of the tank, x = 9 m
Height of the tank, z = 3 m
Acceleration of the tank, [tex]$a_x = 2.5 \ m/s^2$[/tex]
Therefore, the pressure difference between the two points is given by :
[tex]$P_2-P_1 = -\rho a_x x - \rho(g+a)z$[/tex]
Since the tank is completely filled with milk, the vertical acceleration is [tex]$a_z = 0$[/tex]
[tex]$P_2-P_1 = -\rho a_x x- \rho g z$[/tex]
Therefore substituting, we get
[tex]$P_2-P_1=-(1020 \times 2.5 \times 7) - (1020 \times 9.81 \times 3)$[/tex]
[tex]$=-17850 - 30018.6$[/tex]
[tex]$=-47868.6 \ Pa$[/tex]
[tex]$=-47.868 \ kPa$[/tex]
Therefore the maximum pressure difference in the tank is Δp = 47.87 kPa and is located at the bottom of the tank.
Someone please please please help me with this. I’ll give u whatever rating u want
The vertical forces add up to zero.
The net force on the object is 60N to the right.
F = m • a
60N right = (10kg) • (a)
a = (60N right) / (10kg)
a = 6 m/s^2 to the right
Multi-engine Commercial would be nice.
A 0.160 pF parallel-plate capacitor is charged to a potential difference of 10.0 V and then disconnected from the battery. A cosmic ray burst creates 1.00 x 106 electrons and 1.00 x 106 positive charges between the plates. If the charges do not recombine, but reach the oppositely charged plates, by how much is the potential difference between the capacitor plates reduced
Answer:
1.0 volts
Explanation:
Given that:
The potential difference between the plate V = 10 V
C = 0.160 pF = 0.160 × 10⁻¹² F
The charge on the capacitor
Q = CV
Q = 0.160 × 10⁻¹² × 10
Q = 1.6 × 10⁻¹² C
It implies that the positive plate of capacitor has +1.6 × 10⁻¹² C charge while the negative plate has -1.6 × 10⁻¹² C
The number of excess electrons on the negative plate is:
[tex]n = \dfrac{q}{e}[/tex]
[tex]n = \dfrac{-1.6\times 10^{-12}}{-1.6\times 10^{-19}}[/tex]
[tex]n = 1.0 \times 10^7[/tex]
Thus, electron deficiency on the positive plate is [tex]1.0 \times 10^7[/tex]
The net negative charge that moves towards the positive plate is :
q = number of electrons moved × e
[tex]q = 1\times 10^6 \times (-1.6 \times 10^{-19})[/tex]
[tex]q = -1.6 \times 10^{-13} \ C[/tex]
Now, the net charge on the positive plate is:
[tex]q_{net} = q +q' \\ \\ q_{net} = (1.6 \times 10^{-12}) + (-1.6 \times 10^{-13})[/tex]
[tex]q_{net} =1.44 \times 10^{-12} \ C[/tex]
The potential difference between the plate;
[tex]V_{new} = \dfrac{q_{net} }{c}[/tex]
[tex]V_{new} = \dfrac{1.44 \times 10^{-12} }{0.16 \times 10^{-12}}[/tex]
[tex]V_{new} = 9.0 V[/tex]
The reduction in potential difference
[tex]\Delta V = V - V_{new}[/tex]
[tex]\Delta V = 10 - 9.0[/tex]
[tex]\mathbf{\Delta V = 1.0 \ volts}[/tex]
What is the weight of an object (on earth) that has a mass of 45 kg?
Answer:
441 N
Explanation:
weight = mass x gravity
w = m x g.
We know that gravity = 9.8 m/s^2 and mass = 45 kg.
w = 45 kg x 9.8 m/s^2
w = 441 N
So the weight of the object is 441 N (newtons).
Answer:441 N.
Explanation:
The weight of 45 kg at rest on the surface of the Earth is about 45 * 9.8 N = 441 N.
What type of wave has crests and troughs?
Answer:
tidal wave
Explanation:
How to get a stand from JoJo
Answer:
Get yourself pierced by a stand arrow, and see if you're worthy and then you will attain a stand
If a 6-kg bowling ball is rolled down the bowling lane with a force of 12 N, what is the acceleration of the ball?
which of the following can be used as a measure of an object's inertia?
a) mass
b) force
c) velocity
d) acceleration
Answer:
a
Explanation:
during what part of their drive are the not moving?
2. What is a mirror? How does it work?
Answer:
a mirror is a glass which reflects the light falls on it ok
Explanation:
just put a light and see ok
please mark me as brainlist
If you double the compression of a spring it’s elastic potential energy will do what
Answer:
When you stretch or compress a spring you work against the restoring force of the spring. This work is stored as elastic potential energy in the spring. The more you stretch or compress the spring, the more work is done by you and more energy is stored.
This is also evident from the expression of the potential energy ( U ) -
U=(1/2)kx2
Where x is the displacement from the unstretched position of the spring. Greater is the x. more is the energy stored.
An object is experiencing an acceleration of 12 m/s2 while traveling in a circle of radius 5.0 m. What is its velocity?
Answer:
v = 7.74 m/s
Explanation:
Given that,
The acceleration of the object, a = 12 m/s²
The radius of the circle, r = 5 m
We need to find the velocity of the object. The centripetal acceleration act on the object that is given by :
[tex]a=\dfrac{v^2}{r}\\\\v=\sqrt{ar} \\\\v=\sqrt{12\times 5} \\\\v=7.74\ m/s[/tex]
So, the velocity of the car is 7.74 m/s.
Minimum interplanar spacing required for Bragg's diffraction is:
Answer:
Explanation:
\frac{\lambda }{2} is the minimum interplanar spacing which is required for Bragg's diffraction to occur.
Suppose a utility charges its large industrial customers $0.08/kWh for energy plus $10/mo per peak kVA (demand charge). Peak kVA means the highest level drawn by the load during the month. If a customer uses an average of 750 kVA during a 720-h month, with a 1000-kVA peak, what would be their monthly bill if their power factor (PF) is 0.8
Answer:
$42,560
Explanation:
Given that :
Charge per kwh = $0.08
Peak kvA = $10 /month
Total hours = 720 hours / month
Peak = 1000kVA
Power factor (PF) = 0.8
Averga power = 750k
Power consumption (Active) = PF* average Powe
Active consumption =. 0.8 * 750 = 600kW
Energy used = 600 * 720 = 432000 KW
Cost = 432000 *$0.08 = $34,560
Peak Energy = 0.8 * 1000 = 800 KW
Cost = $10 * 800 = $8000
Total = $(34,560 + 8000)
Total = $42,560
A man standing on the Earth can exert the same force with his legs as when he is standing on the moon. We know that the mass of the man is the same on the Earth and the moon. We also know that F=ma is true on both the Earth and the moon. Will the man be able to jump higher on the moon than the Earth? Why or why not?
PLEASE HELPPPP
Answer:
yes
Explanation:
earth has gravity force that is high than the moon gravity force which is 1/6 of earth gravity
Earth has gravity force that is high than the moon gravity force which is 1/6 of earth gravity.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
The force on the moon is less than earth as gravity is 1/6 on the moon
When man jump than he will jump high on the moon than the earth.
Earth has gravity force that is high than the moon gravity force which is 1/6 of earth gravity.
To learn more about force refer to the link:
brainly.com/question/13191643
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a dump truck travels 70mph for 3 hours, then for 20mph for another 2 hours in the same direction. what is the average speed the car traveled?
Answer:
the average speed of the car is 170 mph.
Explanation:
Given;
initial speed, u = 70 mph
time of motion, t₁ = 3 hours
final speed, v = 20 mph
time of motion, t₂ = 2 hours
The average speed of the car is calculated as;
[tex]v' = \frac{70(3) - 20(2)}{3-2} \\\\v' = 170 \ mph[/tex]
Therefore, the average speed of the car is 170 mph.
why is the galaxy when me is the no galaxy so not galaxy but is galaxy so why is thee aliens is the yes but is the no but should not be the ok but when the yes 20 lashes
Answer:
they are in imaginary world in this every thing is possible
1. Two boxes stacked on top of one another weigh 100 kg total. They apply
a friction force of 250N. You apply a force of 300N in the right direction.
What is the total net force and direction of the box?
Answer:
150
Explanation:
a stone of mass 6 kg is released from a height of 30 metre calculate the potential energy
Answer:
P.E = 1764 Joules
Explanation:
Given the following data;
Mass = 6kg
Height = 30m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the potential energy;
Potential energy can be defined as an energy possessed by an object or body due to its position.
Mathematically, potential energy is given by the formula;
[tex] P.E = mgh[/tex]
Where,
P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
Substituting into the equation, we have;
P.E = 6 * 9.8 * 30
P.E = 1764 Joules
What is a force that causes an object to slow down when it touches another object
Inertia
Massive force
Frictional force
Balanced force
Frictional force is the force that causes an object to slow down when it touches another object. Thus, the correct option is C.
What is Frictional force?Frictional force of an object is the force which is generated by the two surfaces which generate due to their contact and slide against each other. A few factors which affect the frictional force are that these forces are mainly affected by the surface texture of the object and the amount of force impelling them together.
Frictional force is mainly of four types which include static friction, sliding friction, rolling friction, and the fluid friction. The frictional force can be given by the formula: F = μN, where μ is a constant.
Therefore, the correct option is C.
Learn more about Frictional force here:
https://brainly.com/question/30280752
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When the starter motor on a car is engaged, there is a 320 A current in the wires between the battery and the motor. Suppose the wires are made of copper and have a total length of 1.5 m . For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. What minimum diameter can the wires have if the voltage drop along the wires is to be less than 0.50 V?
Answer:
0.5
Explanation:
because it is V uwbsusvegwjosnfvehdbuxbdusndgdghqbwbwbbeuehdbdhdhdhdudhdhdudhdnskowoqllqlqlqnebe
saturn exerts a much greater force on the moon Pan than Pan exerts on saturn. true or false
Answer: False
Explanation:
because according to universal law of gravitation, every object attracts every other object in the universe.
according to the newton's third law, for every action there is equal and opposite reaction.
So, both the saturn and pan exerts same force on each other
But from the newton's second law we have, F = ma & a = F/m
so, from the above equation acceleration produced by pan is high compared to the acceleration produced by saturn.
Therefore, acceleration produced by saturn is lower than the acceleration produced by pan
but force exerted by saturn is equal to the force exerted by pan
So, the answer is false
Hope it helped u,
pls mark as the brainliest
^_^
The statement is false. Saturn does not exert a much greater force on the moon Pan than Pan exerts on Saturn.
What is gravitational force?Newton's law of gravitation states that each particle having mass in the universe attracts each other particle with a force known as the gravitational force.
Gravitational force is proportional to the product of the masses of the two bodies and inversely proportional to the square of their distance.
According to Newton's third law, there is an equal and opposite response to every action. As a result, both Saturn and Pan exert the same force on one another.
But, according to Newton's second law,
F = ma
a = F/m.
As a result of the preceding equation, the acceleration generated by the pan is greater than that caused by Saturn. As a result, the acceleration generated by Saturn is less than that produced by Pan.
So that the power exerted by Saturn is equivalent to that of Pan.
Hence the statement is false.
To learn more about the gravitational force refer to the link;
https://brainly.com/question/24783651
The speed limit on suburban roads is 50 km/h. You are traveling at the limit when an empty bag blows onto the road from behind a parked car 5.0m in front of you. If you maintain your speed how long will it be before you hit?