Answer:
C
Explanation:
mass is a scalar quantity, number of anything is also a scalar quantity, since it lacks direction, and wind velocity is a vector quantity
The given quantities are classified as vector and scalar quantities;
mass of an object (scalar)the number of leaves (scalar)wind velocity (vector)Vector quantities are those quantities that have both magnitude and direction. Examples include the following;
velocity (m/s)acceleration (m/s²)force (N)weight (N)Scalar quantities are those quantities that have only magnitude but no direction. Examples include the following;
speeddistancemasswork, etcThus, from the explanation above, we can classify the given quantities as follows;
mass of an object (scalar)the number of leaves (scalar)wind velocity (vector)Learn more here: https://brainly.com/question/24700357
A sonar emits a sound signal of frequency 40000Hz, towards the bottom of the sea.
This signal is reflected on the body of a submarine after a delay of 0.3 seconds.
Given: Speed of sound in water is 1500 m/s.
Calculate the period of this wave.
Answer:
0.000025s
Explanation:
Period it’s. : T(s)= 1/f(Hz)=1/40000Hz=0.000025s
How are amplitude, intensity, and
loudness related?
Answer:
Amplitude is a measure of the size of sound waves. It depends on the amount of energy that started the waves. Greater amplitude waves have more energy and greater intensity, so they sound louder. The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less.
Explanation:
What specific space object is shown in the picture below?
A) Black hole
B) Red Dwarf
C) Brown Dwarf
D) Star
E) Galaxy
F) Wormhole
Which statement describes this image
Answer:
3rd one i think.
Explanation:
1.) True or False.
The two forces in an action-reaction pair are always equal in strength.
2.) True or False.
The two forces in an action-reaction pair act in the same direction.
3.) True or False.
Action-reaction force pairs act on the same object.
4.) True or False.
Action-reaction force pairs act simultaneously.
Answer:
Explanation:
According to Newton's third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. This means that when you push on a wall, the wall pushes back on you with a force equal in strength to the force you exerted. 1.True 2.falues 3.true 4. not really sure on this one
Joey's little brother makes a ramp to push hos toy dump truck up to his sandbox. if he uses 5N of force to push the 12N truck up the ramp, what is the mechanical advantage of his ramp?
A. 6.0
B.0.42
C. 2.4
D. 23.5
17) An object is being pulled in two different directions by two students. One student pulls to the left with 12 N
and the other pulls to the right with 15 N. What is the net force on the object?
a) 27 N right.
b) 3 N right
c) 2 N left.
d) 3 N left.

6. Calculate the mass of mass A in the diagram. The frame joining
the masses is massless.
A
centre of mass
15 cm
30 cm
15 cm
3 kg
8 kg
40 cm
Figure 4.36
Answer:
calculate the mass of mass A i the diagram .the frame joining the mass is massless
Explanation:
The mass of mass A the diagram .the frame joining the mass is massless.
What is Mass?The unique location in an object or system that can be used to describe how the system reacts to outside forces and torques is referred to as the "center of mass" or "center of gravity" in a uniform gravity field.
The idea of the center of mass is that it is the average of all the masses divided by the distances between them. With regard to the torques produced, that is comparable to balancing a seesaw around a pivot point in one plane.
Therefore, The mass of mass A the diagram .the frame joining the mass is massless.
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whar determines the direction of ocean currents
Answer:
The direction in which they rotate is determined by the hemisphere in which they are located. The main overall global wind patterns, the rotation of the Earth, and the shape of ocean basins are the three major factors that decide surface currents.
Oceanic factors are Tempature, salinity, density, pressure gradient and melting of ice. Atsmopheric factors are atsmopheric pressure, winds, rainfall, evaporation and insolation
Suppose a small black hole with mass equal to 7.35 × 10^30 kg drifted past Earth at the same distance as the Moon. The mass of the Moon is about 7.35 × 10^22 kg. What might be expected? (Please do not answer if you do not know, this is for a project worth 30% of my grade)
Answer:
wt f i dont care
Explanation:
What is the mass of a child in a wagon that has a velocity of 10 m/s and a Momentum of 30 KG* M/S
P=MXV
Explanation:
sinces : Momentum = velocity × mass
then : 30 = 10 × m and m = 30 ÷ 10 = 3 kg
An 88.0 kg passenger is inside a 1450.0 kg elevator that rises 30.0 m in exactly 1.0 minutes. How much power is needed for the elevator's trip?
Answer:
Explanation:
When you lift a box, what is the effort force?
Answer:
effort force: The force used to move an object over a distance. resistance force: The force which an effort force must overcome in order to do work on an object via a simple machine. ideal mechanical advantage: The factor by which a mechanism multiplies the force put into it.
Explanation:
Which team is defense?
Answer:
What are the teams? Football would be defense...
Explanation:
sorry if this didn't answer your question...
Answer:
The team without possession of the ball (B)
Explanation:
Keegan has a wood ball, James has a steel ball, and Drew has a ping pong ball. If they all blow them with the same air force across a table using a straw, whose ball with will win the race?
Answer:
A ping pong ball
Explanation:
It has the lightest weight among the rest
Una mujer recorre una trayectoria rectilínea en su camioneta primera una velocidad constante de 50 km/h luego a 70 km/h y después de 60 km/h durante su trayecto a su trabajo ¿cuál será la velocidad promedio?
Answer:6/1 %50 x11
Explanation:
25-45
What is the wavelength of visible light emitted at 4.2 x 10^8 Answer in units of M
Answer:
0.714 m
Explanation:
From the question,
v = λf......................... Equation 1
Where v = velocity of visible light, f = frequency of visible light, λ = wave length of visible light.
make λ the subject of the equation
λ = v/f.................. Equation 2
Given: f = 4.2×10⁸ Hz
Note: Light is an electromagnetic wave, and all electromagnetic waves travels with the same speed (3×10⁸ m/s)
Constant: v = 3×10⁸ m/s
Substitute these values into equation 2
λ = 3×10⁸/4.2×10⁸
λ = 0.714 m
A force of 40 N stretches a spring 0.20 m what is the spring
constant?
a. 2000 N/m
b. 200 N/m
c. 20 N/m
d. 2 N/m
If you use a lever to lift a boulder 0.25m, while applying 350 N on the lever which moves 1.5 m down on your side. What is the weight of the boulder? (F1d1 = F2d2) 87.5 N 131 N 525 N 2100 N
Answer:
2100 N
Explanation:
From the question,
Using the formula
F₁d₁ = F₂d₂..................... Equation 1
Where F₁ = Weight of the Boulder, d₁ = distance moved by the Boulder, F₂ = Force applied on the lever, d₂ = distance moved by the lever.
make F₁ the subject of the equation
F₁ = F₂d₂/d₁.................... Equation 2
Given: F₂ = 350 N, d₁ = 0.25 m, d₂ = 1.5 m
Substitute these values into equation 2
F₁ = 350(1.5)/0.25
F₁ = 2100 N
Everyone open this please!
There are accounts spreading around the same link to answers of questions saying that it’s the only way to type it. Don’t open them! I don’t know what it is but I’ve seen the same link multiple times so it seems sketchy.
Answer:
yeah i knowwwwwwwwwwwwww
Explanation:
Answer:
I sit by myself talking to the MOOOOOOOOONNNNNNNN
Explanation:
there is T__ as much voltage. This
produces twice the current
When melting of a metamorphic rock occurs, it changes into what?
Answer:
The upper limit of metamorphism occurs at the pressure and temperature of wet partial melting of the rock in question. Once melting begins, the process changes to an igneous process rather than a metamorphic process. During metamorphism the protolith undergoes changes in texture of the rock and the mineral make up of the rock.
Explanation:
i hope this helps
When melting of a metamorphic rock occurs, it changes into Magma and igneous rock will emerge as a result of this..
What is metamorphism?Sedimentary, igneous, and metamorphic rocks are the three distinct types of rocks that make up the rock cycle. Rocks such as sedimentary and igneous rocks were not always rocks.
A very particular set of circumstances must exist for a rock to undergo metamorphism. It is necessary to subject the preexisting rock to extreme temperatures, high pressures, or hot, mineral-rich fluids. All three of these conditions are typically true. The Earth's crust is where these conditions are most frequently encountered, either there or at plate borders when tectonic plates meet.
It is essential that the current rock not melt in order to produce metamorphic rock. The rock will melt under excessive heat or pressure and turn into magma. Instead of a metamorphic rock, an igneous rock will emerge as a result of this.
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Which of the following did you include in your response? Check all that apply. Absolute strength measures maximum force. Dynamic strength measures repeated motions Elastic strength measures exertion of force rapidly Strength endurance measures fatigue resistance
Answer:
d
Explanation:
Answer:
any answer would be correct. its a choose your own answer question lol
Explanation:
what is 1 AU equal to in kilometres
Answer:
1 au is 1.496e+8 kilometres
Explanation:
Easy AU to km conversion. A kilometer, or kilometre, is a unit of length equal to 1,000 meters, or about 0.621 miles.
Hope this helps :)
number of atoms of each element Sulfur dioxide?
Answer:
Element Symbol # of Atoms
Oxygen O 2
Sulfur S 1
Explanation:
The reason a penny thrown straight up inside a bus will come back to your hand is that you, the bus, the air inside the bus, and the penny are all moving at the same velocity.The law of inertia applies to both moving and nonmoving objects.
this is a true or false question help
Answer:
its false
Explanation:
since the penny is thrown straight up its not going to move forwad with you and the bus since it has no forces pushing on it. If the bus wasn't moving it would land back on your hand
Question 13 of 20
A copper atom has an atomic number of 29 and an atomic mass of 64. What
is the structure of this atom?
A. It has a central nucleus composed of 29 protons and 29 neutrons,
surrounded by an electron cloud containing 35 electrons.
B. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.
O C. It has a central nucleus composed of 35 protons and 29 neutrons,
surrounded by an electron cloud containing 29 electrons.
D. It has a central nucleus composed of 29 protons and 64 neutrons,
surrounded by an electron cloud containing 29 electrons.
SUBMIT
Answer:
B. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.
Explanation:
Protons and neutrons are the only subatomic particles with mass, and they are located in the nucleus. If this atom has an atomic number of 29 and is copper, it must have 29 protons (protons define which element is being observed). This means all remaining mass is from neutrons. 64-29 = 35.
Electrons have no mass and orbit the nucleus in the electron cloud. Since this copper atom is neutral (we are not told it has a charge), there must be an equal number of protons and electrons.
Answer:
B. It has a central nucleus composed of 29 protons and 35 neutrons,
surrounded by an electron cloud containing 29 electrons.
Explanation:
Hope this helps
an ocean wave has a wavelength of 3 meters and a frequency of 0.5 Hz. What is
the speed of the wave?
Answer:
1.5 m\s Ans ......
Explanation:
Data:
f = 0.5 Hz
w = 3 m
v = ?
Formula:
v = fw
Solution:
v = (0.5)(3)
v = 1.5 m\ s Ans ........
A 1202-kg car is stopped at a stoplight. Inside, the car has three occupants. The two passengers have a mass of 75 kg each, while the driver has a mass of 105 kg. The driver steps on the gas pedal, and the car begins to accelerate at a rate of 2.5 m/s2 . What is the force that the engine is applying to the car?
Answer:
F = 63.25 N
Explanation:
a = 2.5 m / s ²
m = 25.3 kg
F =?
We calculate the force.
F = ma
F = (25.3 kg) (2.5m / s²)
F = 63.25 N
Solution.
F = 63.25 N
I was playing goalie in a soccer league and made a save. The ball was traveling at 14 m/s and has a mass of 0.45 kg. How muck kinetic energy did the ball have when it hit me
Answer:
Kinetic energy = 44.1 J
Explanation:
Given:
Velocity of ball = 14 m/s
Mass of ball = 0.45 kg
Find:
Kinetic energy
Computation:
An item's kinetic energy is force it has as a result of its motion. It is the amount of work necessary to move a body of a known volume from rest to a specified velocity.
Ke = (1/2)(m)(v²)
Ke = (1/2)(0.45)(14²)
Ke = (1/2)(0.45)(196)
Kinetic energy = 44.1 J