Answer:
Vibrates 5 times a / every second
Explanation:
Donna shines a flashlight and a laser pointer on a sheet of paper. She holds each device at an equal distance from the paper. How does the light hitting the paper from each device appear different?
The light from the flashlight lights up a larger area of the paper.
The light from the laser pointer lights up a larger area of the paper.
The light from the flashlight magnifies a larger area of the paper.
The light from the laser pointer magnifies a larger area of the paper.
Answer:
A the light on the flash light lights up a bigger area
I'm pretty sure this is right.
Explanation:
Answer:
a
Explanation:
A force of 1200N is creating a pressure of 60Pa on a surface. Calculate the area of the surface.
Answer: 20 squared units
Explanation:
Area = Force / Pressure
3. Which of the following is determined by the
force of gravity?
A weight
B momentum
C mass
D distance
Answer:
A) weight is determined by the force of gravity.
Answer:
A weight
Explanation:
The answer is weight. That's why someone would weigh more on a different planet, because the planet would have a higher/lower force of gravity.
a trolley of mass 20kg was originally at rest on a smoth horizontal surface. bu how much will it accelerate if a pulling force of 22N is applied on it horizontally?
Answer:
just divide 22 N by 20 kg to get the acceleration in m/s2
Explanation:
I hope this is right-
pls help, i really dw fail :(
Answer:
Using the Newton equation
V²=U² +2as
Given; V=9.2m/s U = 0m/s( because it starts from rest)
S=26.2m.
9.2²=0²+2(26.2)a
a =9.2²/2(26.2)
a=84.6/52.4
a=1.60m/s²
Answer:
2.A
3.D
Explanation:
HOPE THIS HELPS!! :)
Do you think we might have problems with not enough water to supply our needs (water scarcity) in the
ture? Why or why not? If you answered yes, what might the causes be?
Answer:
Water scarcity (water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. Humanity is facing a water crisis, due to unequal distribution (exacerbated by climate change) resulting in some very wet and some very dry geographic locations, plus a sharp rise in global freshwater demand in recent decades driven by industry. Water scarcity can also be caused by droughts, lack of rainfall, or pollution. This was listed in 2019 by the World Economic Forum as one of the largest global risks in terms of potential impact over the next decade.[1] It is manifested by partial or no satisfaction of expressed demand, economic competition for water quantity or quality, disputes between users, irreversible depletion of groundwater, and negative impacts on the environment.[2] Two-thirds of the global population (4 billion people) live under conditions of severe water scarcity at least 1 month of the year.[3][4][5][6] Half a billion people in the world face severe water scarcity all year round.[3] Half of the world's largest cities experience water scarcity.[5]
PLEASE READ CAREFULLY. AND PLEASE MARK AS BRAINLIEST
Please help ill give out brainliest?!!!
An arrow that is pulled back by a bow has which type of energy?
Answer:
Kinetic energy
Explanation:
Kinetic energy is the energy of motion, and the arrow is in motion.
How are ultraviolet waves used for communication
who can teach me phsics
The asteroid has an estimated mass of 4000 kg and an orbital speed of 10 m/s. Determine the amount of kinetic energy of the asteroid. *
Answer:
40,000J
Explanation:
name one material through which continuous flow of charge can be produced from chemical energy
Answer:
Battery.
Explanation:
A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells
A certain element has a half-life of 200 years. How much of a 1600 gram sample would be left after 800 years?
2222222×7÷4÷5+6(8×9)
Helppp!!!!! Please!!
A 0.144 kg baseball approaches a batter with a speed of 20m/s . The batter lines the ball directly back to the pitcher with a speed of 30m/s . Find the impulse exerted on the ball . If the bat and ball were in contact for 0.012 sec , find the average force exerted on the ball by the bat????
Answer:
Can you help me in mathematics
Which of the following describes a reference point?
A. The location of an object before its motion begins
B. The center point of a grid
C. The point at which the direction of motion changes
D. The position of an object after its motion has stopped
32. Increasing the amplitude of a sound wave produces a
sound with
1. lower speed
2. higher pitch
3: shorter wavelength
4. greater loudness
Answer:
4
Explanation:
because amplitude of a sound wave is related to loudness of the sound, so the higher the amplitude, the louder the sound
hope this helps
How are speed and velocity alike?
A. They both include the total distance traveled.
B.They both require a reference point.
C. They both describe a rate of motion.
D. They both include the direction of motion.
Answer:
c
Explanation:
PLEASE HELP ASAP!!
Select the correct answer.
According to this map, which county in Florida is most in need of safe rooms and hurricane ties?
A.
Hillsborough
B.
Jefferson
C.
Palm Beach
D.
Miami-Dade
Answer:
I think it's Miami-Dade
Explanation:
i hope this helps
Answer:
it is miami-dade!
Explanation:
Which of these actions would increase heat transfer between two objects?
establishing their thermal equilibrium
increasing the area of their contact
using objects with similar specific heats
reducing the time of their contact
Answer:
b
Explanation:
increasing the area of their contact.
BTS ARMY
Answer: B.) increasing the area of their contact
Explanation: i hope this helps :)
A 3500 N is force is applied to a spring that has a spring of constant of k= 14000 N/m. How far from equilibrium will the spring be displaced?
Answer:
the spring be displaced by 25.0 cm
Explanation:
The computation is shown below:
As we know that
F= -K × x
So,
[tex]x = \frac{-F}{K}[/tex]
Now
[tex]x = \frac{-3500}{14000} \\\\[/tex]
= -0.250m
= 25.0 cm
Hence, the spring be displaced by 25.0 cm
is boiling water in a kettle on a stove kinetic or potential energy?
Answer:
Boiling a kettle is an example of both thermal and kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object.
it's kinetic!
so by the shape look at this what will the time acceleration speed or velocity be in a beyblade what is the average if the beyblade spins for atleast 45 seconds and the beyblade weighs 55 grams what is the speed or acceleration of the beyblade?
Answer:
the answer is 1.09 speed
Answer:
2.00
Explanation:
PLEASE HELP ASAP!!!!!
Answer:
MOSE
Explanation:
While standing at home plate, a batter swung a 2.5kg bat at 2.5 m/s toward an incoming mass. The mass was a 0.4 kg blob of clay, thrown toward the batter at 26 m/s, which stuck the the bat in an inelastic collision. What velocity of the velocity of the bat and blob of clay (which are stuck together) after the collision? Help fast will give brainliest
Show work
Answer:
5.74 m/s
Explanation:
m1v1+m2v2=(m1+m2)*vf
2.5*2.5+0.4*26=(2.9)vf
16.65=2.9vf
vf=5.74 m/s
Which type of earthquake waves are responsible for most of the damage caused by an earthquake? Why?
please helppppp its due tomorrow
Answer:
Surface waves travel along the surface. There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.
Answer:
surface waves
Explanation:
they have the strongest vibration and can cause the most damage
As Clinton walks he pushes his shoe against the track.
Which of the following best describes the reaction force to Clinton's shoe pushing against the track?
OA. The track pushes back on Clinton's shoe with the same force.
ОВ.
The track pushes in the same direction as Clinton's shoe with the same force.
OC. The track pushes against gravity with the same force.
The track pushes in a different direction with a different force.
Answer:A:The track pushes back on Clinton's shoe with the same force.
Explanation:According to Newton's third law of motion, for every action force there is an equal and opposite reaction force. In this case, the action force is Clinton's shoe pushing on the track. As this happens, there is an equal and opposite reaction force in which the track pushes back on Clinton's shoe with the same force.
One of the signs a chemical reaction is taking place
Answer: One of the signs a chemical reaction is taking place is the presence of bubbles. :)
I can fly but have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
cloud?? thats prob wrong lol
Answer:
a shadow a cloud i dont really know
PLEASE HELLP ILL GIVE BrAINLY AND HEART
you are visiting a town that is in the middle of a large continent. How would you expect the ocean currents to effect the climate in the town?
A ) More Thunderstorms
B ) Cooler Temperatures
C ) Warmer Temperatures
D ) There is little effect on the town's climate
Answer:
D
Explanation:
In which beaker were the particles moving the most slowly?
O A. Beaker C: 15°C
B. Beaker D: 18°C
C. Beaker B: 9°C
O D. Beaker A: 3°C
Answer:
It might be wrong but d? i think
Answer:
B. Beaker D: 18°C
Explanation:
Test approved