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
Element Type of ion formed in a chemical reaction
Phase at room
temperature
Reactivity
W
positive
solid highly reactive
X
does not form ions
gas non-reactive
Y
negative
gas highly reactive
Z positive liquid
somewhat reactive
Using your knowledge of periodic properties and trends, how would these elements BEST be classified and why?
A.
Elements W and Z are nonmetals, Elements X and Y are metals, but Element Y is in Group 1 (alkali metal).
B.
Elements W and Z are metals, Elements X and Y are nonmetals, but Element Y is in Group 18 (noble gas).
C.
Elements W and Z are metals, Elements X and Y are nonmetals, but Element X is in Group 18 (noble gas).
D.
Elements W and Z are nonmetals, but Element W is in Group 17 (halogen). Elements X and Y are metals.
Answer:C
Explanation:
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.
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:
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.
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
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
You and your 3 friends are driving down the road. All the wheels go flat at the exact same time, that's not good. You have to use a 2,100 N force to push the car 4 meters to the side of the road. How much work did you do on the car?
Answer:
Workdone = 8400 Nm
Explanation:
Given the following data;
Force = 2100 N
Distance = 4 meters
To find the work done;
Workdone = force * distance
Workdone = 2100 * 4
Workdone = 8400 Nm
Therefore, the amount of work done on the car is 8400 Newton meters.
What is the total energy of a system with KE = 1368 J and a PE = 5782J? Express your answer in kJ.
Answer:
7.150 KJ
Explanation:
The total energy of a system is the sum of the potential and kinetic energy in the system. According to this question, the kinetic energy (KE) = 1368 J and a potential energy (PE) = 5782J.
Total energy of the system will be PE + KE as follows;
1368J + 5782J
= 7150J
However, the question demanded that the answer be in kJ (kilojoules), which is higher than the joules.
Since 1kJ = 1000J
7150J = 7150/1000
= 7.150kJ
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!
Explain the different types of energy in a working wind turbine
Answer:
A wind turbine converts the kinetic energy of the wind into mechanical power.
The wind moves the turbine and the turbine produce energy.
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.
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
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 :)
How does an increase in thermal energy affect the kinetic energy of the particles in each state of matter
Explanation:
when there is an increase in thermal energy, the kinetic energy if the matter increases as well.
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
Motion maps for two objects, Y and Z, are shown.
Y →
Z
x
How many seconds does Object Z start before Object Y?
2.
03
04
5
Answer:
i can't see the map plzz send the map
Answer:
its 3
Explanation:
I just took test
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
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:
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
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
who can teach me phsics
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. :)
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:
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
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:
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:
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!! :)
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