Answer:
False
Explanation: The cannonball that is faster has more force and energy therefore go longer and the cannonball with less speed will fall sooner with the lack of force and energy to carry it.
PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP. I NEED TO GIVE THIS IN!!!!!
Answer:
a)Acceleration increases proportionally
b)If you increase the mass at a given force the rate of acceleration slows.
How many digits are in front of the decimal in scientific notation?
0
2
1
3
Answer:
1
Explanation:
How many digits are in front of the decimal in scientific notation?
A gas station is charging $1.29 per gallon of gas. What would be the price for a liter of gas?
Answer: $0.343/liter
Explanation: $1.29/gallon x 1 gallon/3.78541 liters = $0.343/liter
which wave lies adjacent to the low frequency portion of the visible spectrum
a. gamma rays
b. infrared
c. x rays
d. ultraviolet rays
Answer: b. infrared
Explanation:
The visible light with the smaller frequency is associated with the color red.
While the blue is the one with the larger frequency.
Now, as the name says, infrared waves are the ones with a frequency just below the one of the red visible light.
Where the frequency of the red light is something around (4.3*10^14 Hz)
and the frequency of the infrared waves is in the range between (10^12 Hz and 10^14 Hz)
Then the correct option is b, infrared.
if your mass on earth is 100.0 kg what is your mass on jupider, where the force of gravity is approximately 2.5 that of earth?
a. 100.0 kg
b. 2500 kg
c. 25 kg
d. 40 kg
Answer:
a. 100.0 kg
Explanation:
Given parameters:
Mass = 100kg
Force of gravity = 2.5m/s²
Unknown:
mass on Jupiter = ?
Solution:
The mass of a substance is the quantity of matter such body possess. Mass is the same.
So, the mass of earth and on Jupiter is the same.
Only the weight of the object will differ since weight is contingent on the force of gravity from places to places.
My mass on Jupiter will still be 100kg
the tempreature change from 237K to 283K
what is the change in tempreature in celsius and fahrenhite scale ?
He back window of this car contains a heating element.The heating element is part of an electrical circuit connected to the battery of the car.
The second law of thermodynamics explains which of the following?
•Why fire occurs in nature.
•Why time can only move forward.
•Why the universe is actualy shrinking.
•Why car engines are not perfectly efficient.
Answer:
The correct option is;
Why car engines are not perfectly efficient
Explanation:
The Second Law of Thermodynamics states that the total entropy, S, of a system combined with the entropy of its surrounding cannot be decreased, such that for an irreversible process, the entropy always increases and [tex]S_f[/tex] > [tex]S_i[/tex], while for a reversible process the entropy is constant and [tex]S_f = S_i[/tex]
The entropy is a measure of the amount of useful work obtainable from heat (or thermal) energy
A system with a low entropy has high amounts of heat energy capable of doing work while a high entropy system can produce only a small amount of useful work from the available thermal energy
In car engines, as the parts start to move, the entropy of the system increases alongside the generated heat lost to the environment, the amount of heat available for doing work reduces and therefore, the entropy increases further and the ratio of work obtainable from a given input of heat energy reduces and therefore, the car engine is not perfectly efficient.
Help this was due yesterday...
Answer:
Concept: Periodic Trends
So we have Li and we have CLi has is lower in the periodic table and as you progress from s group to p group and eventually d group, the traction and ability to attract electrons increases. Hence option DAnswer:
D
Explanation:
plz help me with my most recent post if u can
PLZ HELP! WILL MARK BRAINIEST IF CORRECT
Solve for potential energy and kinetic energy. It's circled.
Explanation:
KE = 0.5mv² = 0.5(50kg)(8.97m/s)² = 2,009.5J.
PE = mgh = (50kg)(9.81N/kg)(1m) = 490.5J.
You can see that the total mechanical energy (ME) is the sum
**URGENT**
When you go to the doctor’s office you step on a balance, which in the U.S. is typically calibrated in pounds. Is this a correct unit for such a balance? What would happen to the reading on this device if you were to stand on it while on the moon? Is this what the scale should read? How would your answers compare if you were to repeat this situation with a doctor’s balance in Mexico?
Answer:
1. no
2. it would be different because of gravity.
3. no
4. they would be different because of the unit of measurment used. Mexico and any other country would use the metric system.
an 80kg skier has a force of 200n exerted on him down the slope
calculate his acceleration down the slope
2 points
15) A 5.0 kg bowling ball moving at 4.0 m/s is caught by 60.0 kg Frodo.
Frodo is initially at rest on frictionless roller skates. How much
MOMENTUM does the bowling ball have BEFORE it is caught? *
Answer:
The initial momentum of the bowling ball is 20 kgm/s.
Explanation:
Given;
mass of the bowling ball, m₁ = 5.0 kg
initial velocity of the bowling ball, u₁ = 4.0 m/s
mass of the Frodo, m₂ = 60 kg
initial velocity of Frodo, u₂ = 0
The initial momentum of the bowling ball is calculated as;
P = m₁u₁
P = 5 x 4
P = 20 kgm/s
Therefore, the initial momentum of the bowling ball is 20 kgm/s.
PLEASE HELP!!
Find the change in temperature of each sample after the hot water was added. Fill in the table with the data you collected
in parts C and D. To find the change in a sample's temperature, subtract the starting temperature from the ending
temperature.
Answer:
Sample Starting Temperature Ending Temperature Change in Temperature
50 g sand
50 g water
100 g water
Explanation:
Its
20C
32C
46C
Answer:
Explanation:
Why is using a slinky not a perfect model for how seismic waves travel through earth?
Answer:
because the earth is more consistent and while you use a slinky your hand moving it is not very controlled
Un globo sonda de 155 L de volumen a 1 atm se deja subir a una altura de 6 Km, donde la presión es de 0,8 amt. Suponiendo que la temperatura permanece constante, ¿Cuál es el volumen final del globo?
Answer:
El volumen final del globo es 193.75 L.
Explanation:
La ley de Boyle establece que “El volumen ocupado por una determinada masa gaseosa a temperatura constante, es inversamente proporcional a la presión”
La ley de Boyle se expresa matemáticamente como: P*V=k donde k es una constante.
En esta ley entonces se relacionan dos variables: presión y volumen, por lo que se asume que la temperatura del gas y el número de moléculas del gas son contantes.
Ahora es posible suponer que tienes un cierto volumen de gas V1 que se encuentra a una presión P1 al comienzo del experimento. Si varias el volumen de gas hasta un nuevo valor V2, entonces la presión cambiará a P2, y se cumplirá:
P1*V1=P2*V2
En este caso:
P1= 1 atmV1= 155 LP2= 0.8 atmV2= ?Reemplazando:
1 atm* 155 L=0.8 atm*V2
y resolviendo se obtiene:
[tex]V2=\frac{1 atm*155 L}{0.8 atm}[/tex]
V2= 193.75 L
El volumen final del globo es 193.75 L.
An arrow of 43 g moving at 84 m/s to the right, strikes an apple at rest. The arrow sticks to the apple and both travel at 16.8 m/s after impact. What is the mass of the apple?
(Plz help ASAP!!! I will give you 50 points)
Answer:
The mass of the apple is 0.172 kg (172 g)
Explanation:
The Law Of Conservation Of Linear Momentum
The total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is
P=mv.
If we have a system of two bodies, then the total momentum is the sum of both momentums:
[tex]P=m_1v_1+m_2v_2[/tex]
If a collision occurs and the velocities change to v', the final momentum is:
[tex]P'=m_1v'_1+m_2v'_2[/tex]
Since the total momentum is conserved, then:
P = P'
Or, equivalently:
[tex]m_1v_1+m_2v_2=m_1v'_1+m_2v'_2[/tex]
If both masses stick together after the collision at a common speed v', then:
[tex]m_1v_1+m_2v_2=(m_1+m_2)v'[/tex]
We are given the mass of an arrow m1=43 g = 0.043 kg traveling at v1=84 m/s to the right (positive direction). It strikes an apple of unknown mass m2 originally at rest (v2=0). The common speed after they collide is v'=16.8 m/s.
We need to solve the last equation for m2:
[tex]m_2v_2-m_2v'=m_1v'-m_1v_1[/tex]
Factoring m2 and m1:
[tex]m_2(v_2-v')=m_1(v'-v_1)[/tex]
Solving:
[tex]\displaystyle m_2=\frac{m_1(v'-v_1)}{v_2-v'}[/tex]
Substituting:
[tex]\displaystyle m_2=\frac{0.043(16.8-84)}{0-16.8}[/tex]
[tex]\displaystyle m_2=\frac{-2.8896}{-16.8}[/tex]
[tex]\displaystyle m_2=0.172\ kg[/tex]
The mass of the apple is 0.172 kg (172 g)
If you push or pull an object,the object gains energy. True or False
Answer:
True
its giving an object that has potential energy, kinetic energy.
Explanation:
What is the relationship between the magnetic and electric fields along the
path of a moving electromagnetic wave?
O A. The angle between them varies as the wave moves.
B. They form a right angle with each other.
148
C. They form a 180° angle with each other.
D. They vibrate at different times.
Answer:
B Other guy said D and it was wrong but the correct answer is B have a good day
Explanation:
Magnetic and electric fields form a right angle with each other along the
path of a moving electromagnetic wave.
What is electromagnetic wave?The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves, or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.
When an electric field interacts with a magnetic field, electromagnetic waves are created. Therefore, they are referred to as "electromagnetic" waves. An electromagnetic wave's electric field and magnetic field are perpendicular to one another (at right angles). Additionally, they are perpendicular to the EM wave's direction.
In vacuum, EM waves move at a fixed speed of 3.00 x 10⁸ m/s. Neither the magnetic field nor the electric field can deflect them. They can, however, exhibit diffraction or interference.
In electromagnetic wave the magnetic and electric fields form a right angle with each other along the path of a moving electromagnetic wave.
Learn more about electromagnetic waves here:
https://brainly.com/question/17057080
#SPJ5
Which type of characteristics can be inherited?
Answer:
Characteristics that can be inherited is hair color or muscle structure.
What kind of waves occur when the motion of the medium is parallel the the wave direction
Answer:
A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
Explanation:
hope this helped
HELP me now what is the meaning of the word scalars and vectors
Answer:
Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction.
An object has 22.4 kg•m/s of
momentum. If you double the mass,
and cut the velocity in half, how
much momentum would it have?
[?] kg•m/s
Answer:
[tex]22.4\:\mathrm{kg\cdot m/s}[/tex]
Explanation:
Momentum is given by [tex]p=mv[/tex].
Let [tex]p_1[/tex] be the initial momentum of the object:
[tex]p_1=m\cdot v=22.4[/tex]
If we doubled the mass, the new mass would be [tex]2\cdot m[/tex], and if we halved the velocity, the new velocity would be [tex]\frac{1}{2}\cdot v[/tex].
Therefore, the final momentum would be:
[tex]p_f=2\cdot m\cdot \frac{1}{2}\cdot v=m\cdot v=\fbox{$22.4\:\mathrm{kg\cdot m/s}$}[/tex]..
Answer:
22.4
Explanation:
Acellus
The pitcher’s mound in baseball is 85 m from the plate. It takes 4 seconds for a pitch to reach the plate. How fast is the pitch?
Answer:
21.25 m/s
Explanation:
The speed of the pitch is equal to the distance the baseball travels (85 m) divided by the time it took for it to cover that distance (4). In short, we are dividing 85 by 4 to reach our answer of 21.25 meters per second.
Which statement describes the transmission of mechanical waves?(1 point)
They cannot travel through matter nor in a vacuum.
They can travel through matter, but not in a vacuum.
They cannot travel through matter, but they can in a vacuum.
They can travel through matter and in a vacuum.
Answer:
They can travel through matter, but not in a vacuum.
Explanation:
The best statement that describes the transmission of mechanical waves is that they can travel through matter but not in a vacuum.
Mechanical waves require a material medium for their propagation. In the absence of such medium they are not transmitted. Examples are seismic waves, sound waves, water waves e.t.c
A type of wave than can be transmitted through a vacuum and through matter are the electromagnetic waves.
Answer:
it is option B. they are correct
Which can be used as a lever ?
A. a black tire
B. a long board
C. a large ball
D a piece of paper
What conditions are needed for germination? Air, water, and warmth Cold air, water, and soil Water, warmth, and a good location Warmth, water, and wind
Answer: this answer is definitely c for k12
Explanation:
What is the weight of a 82.1 kg object on Jupiter, where the acceleration due to gravity is 24.5 m/s2?
Which device uses a rotating electric power source to produce a magnetic field?
A. a motor
B. A step-up transformer
C. A step-down transformer
D. A generator
Answer:
A. a motor
Explanation:
A motor is an electrical device or machine that converts electrical energy into mechanical energy. That is, a motor takes electrical energy to produce motion. There are different types of motors such as DC motor, induction motor and so on.
When electrical current flows through a coil, a magnetic flux is been produced, therefore when a rotating power source is supplied to coil of a motor, a magnetic field is produced which causes torque.
Answer:
A: Motor.
Explanation:
It’ll be a motor because motors use rotating electric power sources to produce magnetic fields.
Select the correct answer. Which of the following is a category of dance? O A. Group dance OB. Solo dance O C. Partner dance OD. All of the above. NEED HELP PLEASE! Due today!!!!!!!!!!!
Answer:
all of above I think sorry if I'm not right but I tried
Answer: d
Explanation:
