what type of energy results from the burning of wood or gasoline?
Answer:
Chemical energy
Explanation:
Chemical energy is energy stored in the bonds of atoms and molecules. Batteries, biomass, petroleum, natural gas, and coal are examples of chemical energy. Chemical energy is converted to thermal energy when people burn wood in a fireplace or burn gasoline in a car's engine.
6. An object has a volume 30ml and a mass of 30g. What is the density
Answer:
1 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 30 g
volume = 30 mL
We have
[tex]density = \frac{30}{30} = 1 \\ [/tex]
We have the final answer as
1 g/mLHope this helps you
If the radio waves that are sent from the speed gun have a frequency of 400,000,002 Hz and the radio waves reflected off an approaching car have a frequency of 400, 000, 10 , what is the speed of the car? (Hz is the SI unit of frequency, equal to cycles per second).
Answer:
fL = fs(V/v-vs) 400000002= 40000010(331/331- vs). then find vs so easy
Please help me on these questions. I’m very stuck.
Answer:
I can't see the pic so I cannot ans
A force of 36 N pushes a box that is 12.2 kg. The box is sliding horizontally 2.6 m/s to the left. What is the coefficient of friction? (Could you draw a Force Diagram?)
The coefficient of friction on the box sliding to the left is 0.3.
The given parameters;
applied force , F = 36 Nmass of the box, m = 12.2 kgvelocity of the box, v = 2.6 m/sThe acceleration of the box is calculated as follows;
[tex]F = ma\\\\a = \frac{36}{12.2} \\\\a = 2.95 \ m/s^2[/tex]
The coefficient of friction on the box is calculated as follows;
[tex]\mu_k = \frac{a}{g} \\\\\mu_k = \frac{2.95}{9.8} \\\\\mu_k = 0.3[/tex]
Thus, the coefficient of friction on the box is 0.3.
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The Sun always shines on half of the Moon. During a new moon, the Moon looks dark.
Where is the lit side of the Moon during a new moon?
Answer:
It is facing away from the Earth.
Explanation:
If half of the moon is always illuminated by the sun, and we can't see the illuminated side during a new moon, the moon is turned away from the Earth.
A 69.0 N object accelerates to the right at 4.5 m/s^2. What is the normal force acting on the object.
Answer:
thanks for the ok points
Explanation:
please don't delete this
I'm sorry I can't answer your question ok bye
Suppose a man pushes a crate with a force of 20 N north. What is the magnitude and direction of the reaction force?
A. 20 N south
B. 20 N north
C. 20 N down
D. There is no reaction force in this case.
D
Explanation:
Because between this force the opposite direction will be zero
Answer: The answer is actually A, 20 N south
Explanation:
Because I got it wrong, but then it showed me the answer.
Hi. okay so, i'm checking to make sure that my homework is correct, i think that H20, N2, CO2, and CH4 is correct. PLZZZ tell me if i'm wrong!!
Answer:
put an X on the second one, the third one, the forth one, and the last one
Explanation:
can i get braineist pls
How do interaction forces act on different masses and on different objects?
Dosen't make sense
Explanation:
TRUE - Two colliding objects will exert equal forces upon each other. If the objects have different masses, then these equal forces will produce different accelerations. ... FALSE - In any collision, the colliding objects exert equal and opposite forces upon each other as the result of the collision interaction.
What is the net force on charge placed at the center of square of length 1m? All charges have same magnitude of 2 micro coulomb.
Answer:
Electric Field intensity is zero.
The reason for that is:
All charges are placed at equal distances from the center of the square and have same magnitude and sign. This means they will exert equal and opposite forces on the test charge at the center. Net force will become Zero.
1 point
A person travels at the rate of 60 miles per hour and covers 300 miles in 5
hours. If he reduces his speed by 10 miles per hour, how long will he take to
cover the same distance ?
Answer:
6 hours
Explanation:
someone help me please
Answer:
2g
Explanation:
Mass is force/area
16 N is the force because N is newtons and that measures force
8m/s^2 is the acceleration
They gave it to you right in front of you
A child throws a ball up with an initial velocity of 4
m/s. If the starting height of the ball was 2.5 meters,
what will be the height of the ball after 0.5 seconds?
Use a = -9.8 m/s/s.
The height of the ball after the given time of motion is 3.275 m.
The given parameters;
initial velocity of the ball, u = 4 m/sheight of fall of the ball, h = 2.5 mtime of motion, t = 0.5 sThe distance traveled by the ball is calculated as follows;
[tex]h =h_0 + ut - \frac{1}{2}gt^2 \\\\h = 2.5 + 4(0.5) - (0.5\times 9.8\times 0.5^2)\\\\h = 3.275 \ m[/tex]
Thus, the height of the ball after the given time of motion is 3.275 m.
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How is water cleaned in chongqing?
Answer:
I know
Explanation:
it gets filterd out
A train accelerates to a velocity of 500 m/s over time of 2s. The acceleration it experienced was 50m/s2. What was its initial velocity?
Explanation:
We know ,
v = u + at u = v - at u = 500 - 2*50u = 400 m/s1. What is the diameter of Mars?
2. What is primary component of Mars’ atmosphere?
3. Why is Mars red?
3. The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue. ... It does have an iron core, but abundant iron exists in its upper layers, also.
mention 4 layers of the atmosphere
Answer:
These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere.
A further region, beginning about 500 km above the Earth's surface, is called the exosphere.
Explanation:
Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot.^_^
A 4300-N force from a car's engines produces an acceleration of 3.3 m/s2. What is the mass of the car?
A. 4300 kg
B. 1300 kg
C. 14,000 kg
D. 390 kg
Answer:The net force acting on the car is 3×103 Newtons
Explanation:
Which situations might cause two observers (A and B) to measure different frequencies for the same vibrating object? Select the two correct answers.
A. Observer A is stationary and Observer B is moving.
B. Observer A and Observer B are moving at different speeds relative to each other.
C. Observer A and Observer B are stationary but at different distances from the vibrating object.
D. Observer A and Observer B are both stationary and at the same distance from the object.
Answer: The answer is (B) Observer A and Observer B are moving at different speeds relative to each other. And (A) Observer A is stationary and Observer B is moving
Explanation:
This question involves the concept of doppler's effect and its effect on the frequency of sound.
The situations that might cause the two observers to measure different frequencies for the same vibrating object are:
"A. Observer A is stationary and Observer B is moving.
B. Observer A and Observer B are moving at different speeds relative to each other."
Doppler's effect states that the apparent frequency of a source of sound is different than its original frequency. It further explains that whenever an observer and the source are in relative motion with each other, either the source or the observer or both are moving, then the frequency of sound measured by the observer will be different than the actual frequency. This changed frequency is called the apparent frequency and it depends upon the direction and magnitude of the relative motion of the observer and the source.
Hence, the measured frequency can be different for the two observers if they are in relative motion with the source, with different speeds, or in the case when one observer is stationary while the other is in motion.
Therefore, the situations that might cause the two observers to measure different frequencies for the same vibrating object are:
A. Observer A is stationary and Observer B is moving.
B. Observer A and Observer B are moving at different speeds relative to each other.
Learn more about Doppler's Effect here:
https://brainly.com/question/1330077?referrer=searchResults
The attached picture illustrates the formulae of Doppler's Effect.
Freud was an influential and controversial psychologist who believed that psychology should study the unconscious mind. Describe
the two books Freud published in the early 1900s. (Site 2)
Answer:
The Interpretation of Dreams": Freud noticed that dreams played an important role in his analysis of neurotic and "hysterical" patients. When he asked his patients to talk about whatever came into their minds, they often referred to their dreams, which would set off other associations and often illuminate other important connections in their past experience. It took Freud about two years to write the book, finishing it in September 1897.
What role does a volcano play in our planets dynamic internal activity
Answer:
Volcanic activity acts as a window to a planet's interior. The type of volcanism and the composition of the lava give scientists a peak underneath the crust. The very presence of volcanic features tells scientists that a planet's interior is -or was - hot enough to form magma that erupted at its surface
Explanation:
hope it's helpful to you
A FORCE OF 3,200 N WEST is applied to a 160 kg mass. What is the acceleration of the mass
ayudenme pls es urgente es nota del cohorte
Answer:
500m
Explanation:
because 250+250 goood
On a trip you travel at a constant speed of 25 kilometers per hour South for 1 hour. You then turn West and travel at a constant speed of 50 kilometers per hour for 2 hour. Calculate your velocity for the trip.
Answer:
41.66 km/h
Explanation:
Calculate the distance of 1st travel :
v = d/t
25 km/h = d/1 h
d = 25 km/h × 1 h
d = 25 kmCalculate the distance of 2nd travel :
v = d/t
50 km/h = d/2 h
d = 50 km/h × 2 h
d = 100 kmCalculate the velocity of trip :
v = d/t
v = (25 + 100)/(1 + 2)
v = 125 km/3 h
v = 41.66 km/hSo, my velocity for the trip is 41.66 km/h
Muscles in a kangaroo's legs work because of the cells that make up the muscle. Which
does this best illustrate?
All living things are made of cells.
Cells are the basic unit of structure and function of all living things,
All cells come from other cells.
Cells are generated from nonliving materials.
Answer:
all living things are made of cells
Explanation:
cells are kinda like matter but only for living thing like when someone says you white blood cell count is low its because they are part of you living body.
A meter stick of uniform material has some dough stuck on one end. The stick has a mass of 0.1 kg. It will balance when supported at a point 0.33m from the dough. How much mass does the dough have?
At the equilibrium or balance point the meter stick stationary and the sum of the moments and forces acting on it is zero
The mass of the dough is .[tex]\underline {51.\overline{51}}[/tex] gramsReason:
Known;
Length of the stick = 1 meter
Mass of the stick, m = 0.1 kg
Point the stick will balance when the dough is at one end = 0.33 m
Required:
How much mass does the dough have
Solution:
The meter stick is balanced when the clockwise moment and the anticlockwise moment about the balance point are equal
Let M, represent the mass of the dough, we have;
The center of mass of the meter stick = The 0.5 m point
Taking moment, we have;
[tex]\mathbf{\sum M_{clockwise} = \sum M_{anticlockwise}}[/tex]Distance from the center of mas of the ruler to the fulcrum, d₁ = (0.5 - 0.33) m
Distance from the dough to the fulcrum, d₂ = 0.33 m
Clockwise moment, [tex]\mathbf{\sum M_{clockwise} }[/tex] = m × d₁
Anticlockwise moment, [tex]\mathbf{\sum M_{anticlockwise} }[/tex] = M × d₂
Therefore;
(0.5 - 0.33) × 0.1 = M × 0.33
Therefore, we get;
[tex]M = \dfrac{(0.5 - 0.33) \times 0.1}{0.33} =\dfrac{17}{330} =0. 0\overline{51}[/tex]The mass the dough has, M = 0.0[tex]\overline{51}[/tex] kg = 51.[tex]\underline{\overline{51}}[/tex] grams
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Liam está empujando una caja pesada por una rampa a una velocidad constante. Hay fricción entre la rampa y la caja. La caja
Answer:
Liam played danganrampa
Explanation:
A rubber duck sat is floating on the surface
on the water. 10N of weight is acting
DOWNWARDS on the water. What other
force must be acting to allow the duck to
float?
The other force that must be acting on the duck is upthrust of 10 N.
The given parameters;
weight of the rubber duck, W = 10 NWhen the weight of the object is equal to the upthrust, the apparent weight will be zero and the object will float in the liquid. This is known as principle of floatation.
Since the given weight of the rubber duck is 10 N, then the upthrust on the duck will be 10 N to enable the duck float on the water.
Thus, the other force acting on the duck is upthrust of 10 N.
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Why is it important to define the coordinate system in free fall
Answer:
H = Vo t + 1/2 g t^2
Velocity and gravitational acceleration are vector quantities - it is very important to use the correct signs for these quantities to get the correct quantity for H the distance traveled.