Answer:
if somthing is warm or if somthing moves it usally has energy
What are two characteristics of transverse waves that are not found in longitudinal waves
Answer:
I don't know I'm sorry I will tell you another answer asks me to
The net force of two forces F1 and F2 acting in the same direction is 85N.And if is 15N when they are exerted in opposite directions. Find the magnitudes of F1 and F2
Clothes in a dryer rub together and begin clinging to each other
A. Friction
B. Conduction
C. Induction
Answer:
Conduction
Explanation:
Because they touch lol
Answer:
Conduction
Explanation:
Because induction is the pass of electricity without contact and conduction is the complete opposite
A snowflake falls from a cloud that is 500 m above the ground. It hits the ground after
being pulled down due to the acceleration of gravity (-10 m/s2). How fast will it be
going as it hits the ground?
Answer:
i wabnt the points lol
Explanation:
The current in the wires of a circuit is 180.0 milliAmps. If the
voltage impressed across the ends of the circuit was doubled
and the resistance was one-third the original value, then its
new current would be _____milliAmps.
Explanation:
ls xgfmc!hchlvb! jt?bjgchfb j
Why does the plane, tied on a string onto the ceiling, move in a horizontal circle, and why doesn’t the plane move up and down?
Answer:
There’s a tangential velocity and centripetal force. The object moves in a circle because it’s falling towards the center of the circle (point directly under string) but the velocity is such that the object never gets closer to the center
Explanation:
Joel uses a force of 50 Newtons to hold two weights 0.60 meters above his head. How much work is Joel doing on the weights?
A material that does not conduct heat very well
A
Expander
B
Radiation
C
Conductor
D
Insulator
Answer:
D
Explanation:
Insulator is like rubber, it cant physically hold heat well
Two dogs are pulling on a chew toy. One dog pulls the chew toy with 64 N (E) and
the other pulls the chew toy with 31 N [W]. Determine the NET FORCE acting on
the chew toy.
Answer:
33 N
Explanation:
Given that,
One dog pulls the chew toy with 64 N (E) and the other pulls the chew toy with 31 N [W].
We need to find the net force acting on the chew toy. Let East be taken positive and west be taken negative. So,
[tex]F_{net}=+64+(-31)\\\\=33\ N[/tex]
So, the net force acting on the chew toy is equal to 33 N.
14
A measure of the gravitational force exerted on an object?
A Weight
B) Force
C)Air resistance
Answer:
C
Explanation:
Answer:
A) weight
Explanation:
Hope it helps :))
The voltage across the terminals of a generator is 5.7 v when it supplies a current of 0.3 A. It becomes 5.1 V when I=0.9A. Find its emf and it's internal resistance
Answer:
The emf of the generator is 6VThe internal resistance of the generator is 1 ΩExplanation:
Given;
terminal voltage, V = 5.7 V, when the current, I = 0.3 A
terminal voltage, V = 5.1 V, when the current, I = 0.9 A
The emf of the generator is calculated as;
E = V + Ir
where;
E is the emf of the generator
r is the internal resistance
First case:
E = 5.7 + 0.3r -------- (1)
Second case:
E = 5.1 + 0.9r -------- (2)
Since the emf E, is constant in both equations, we will have the following;
5.1 + 0.9r = 5.7 + 0.3r
collect similar terms together;
0.9r - 0.3r = 5.7 - 5.1
0.6r = 0.6
r = 0.6/0.6
r = 1 Ω
Now, determine the emf of the generator;
E = V + Ir
E = 5.1 + 0.9x1
E = 5.1 + 0.9
E = 6 V
How much work did he do if he traveled 20 meters?
What is the momentum of a 750 kg car traveling at a velocity of 25 m/s north?
Answer:
18750 kg-m/s
Explanation:
Momentum = mass x velocity
Answer:
18750 kg-m/s
Explanation: Momentum = mass x velocity 750x25 = 18750 kg-m/s
Can you brainlist
Which of the following describes a change in energy that occurs as an acorn falls from a tree toward the ground
As an acorn falls from a tree toward the ground, gravitational potential energy is converted into kinetic energy.
To find the correct option among all the options, we need to know about the conversation of energy.
How are the gravitational potential energy and kinetic energy defined near the earth surface?Near the earth surface, the gravitational potential energy is given as mass×g×height from the earth surface.Kinetic energy is given as 1/2×mass×velocity².How are the gravitational potential energy and kinetic energy converted when acorn falls from a tree?When an acorn is going to fall, it is at maximum height of its journey, so it has maximum gravitational potential energy.Also, at that time, its kinetic energy is zero as it's at rest.But when it moves down, its potential energy decreases as the height decreases and kinetic energy increases due to increasing velocity. So that its total mechanical energy is conserved.Thus, we can conclude that option (d) is correct.
Learn more about the conversation of gravitational potential energy to kinetic energy here:
brainly.com/question/11333389
#SPJ2
What is the geocentric angle of the earthquake focus?
Answer:
epicenter
Explanation:
the epicenter Is d point directly above it at the structure of the earth
F. A 50. A resistor (R2), and unknown resistor R2, a 120 Volt source, and an ammeter are connected in a
complete circuit. The ammeter reads 0.50 ampere (current).
R1
a. Determine the resistance of Rz.
R2
Complete question is;
A 50.-ohm resistor, an unknown resistor R, a 120-volt source, and an ammeter are connected in a complete circuit. The ammeter reads 0.50 ampere.
A) Calculate the equivalent resistance of the circuit shown.
B) Determine the resistance of resistor R shown in the diagram.
Answer:
A) R_eq = 240 Ω
B) R = 190 Ω
Explanation:
A) To get the equivalent resistance, we will use the formula;
R = V/I
Where;
V is Voltage
I is current
R is equivalent resistance
From the question, V = 120 V and I = 0.5A
Thus;
R_eq = 120/0.5
R_eq = 240 Ω
B) From the image, we see that the resistors are connected in series.
Formula for resistors in series is;
R = R1 + R2 +..... Rn
Thus;
240 = 50 + R
R = 240 - 50
R = 190 Ω
A) The equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
What is resistance?Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
R is the resistance = 50.-ohm
v is the voltage = 120-volt source
I is the value of the current =0.50 ampere.
A) The equivalent resistance of the circuit shown will be 240 Ω.
According to ohm's law
[tex]\rm R= \frac{V}{I} \\\\ \rm R= \frac{120}{0.5} \\\\ \rm R=240 \ ohm[/tex]
Hence the equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
The given resistors are connected in the series;
R = R1 + R2 +..... Rn
240 = 50 + R
R = 240 - 50
R = 190 Ω
Hence the resistance of resistor R will be 190 Ω
To learn more about the resistance refer to the link;
https://brainly.com/question/20708652
Determine the kinetic energy (in joules) of a 1000 kg roller coaster car that is moving with a speed of 25.0 m/s?
The Escape speed at the surface of a certain planet is twice that of the earth. If the planet has radius twice of the Earth. what is its mass in unit of earth's mass?
Answer:
1.32 × 1022 short tons
Explanation:
hope this helps
The required mass of the planet is 8 times the mass of the earth.
Given that,
The Escape speed at the surface of a certain planet is twice that of the earth. The planet has a radius twice of the Earth. what is its mass in unit of earth's mass is to be determined.
An object with this velocity at the earth's surface will completely escape the earth's gravitational field, even after accounting for atmospheric losses.
here,
The escape velocity of the planet = 2 Escape velocity of the earth
[tex]\sqrt{{2GM_p}/r_p} = 2\sqrt{2GM_e/r_e}[/tex]
Substitute the values and square both sides,
[tex]{{2GM_p}/2r_e} = 4*{2GM_e/r_e}\\M_p = 8M_e[/tex]
Thus, the required mass of the planet is 8 times the mass of the earth.
Learn more about escape velocity here:
https://brainly.com/question/14297933
#SPJ2
hehe i hate being a single girl....what physical properties dose europium have
Answer:
Europium has a bright shiny surface. it's steel grey and has a melting point of 826 degree Celsius and a boiling point of about 1,489 degree Celsius.
Explanation:
the density is 5.24 grams per cubic centimeter.
Each bat can produce different frequencies of ultrasound. Explain why this is useful if there are many bats hunting together.
Answer: Although low frequency sound travels further than high-frequency sound, calls at higher frequencies give the bats more detailed information--such as size, range, position, speed and direction of a prey's flight. Thus, these sounds are used more often.
Explanation:
If a car used 250,000 W of power to complete a race in 12 s, how much work did the car do?
Answer:
3,000,000 Joules!
Explanation:
power=work/t
250000=work/12
work=3,000,000 Joules
A box weighs 25N. How much mass does it have?
Explanation:
If box weight 25N on ground
MA=F
M(10)=25
M=2.5Kg
Fossil fuels are burned, transferring their chemical potential energy to heat energy. How are nuclear power stations different?
Answer:
fossil fuels are natural and limited, nuclear is man made and more toxic
Explanation:
What phase of matter are the particles least energetic, most dense, and best organized?
A. Plasma
B. Gas
C. Liquid
D. Solid
A sharpening wheel is traveling at 5 rad/s, it slows down to rest in 30 seconds while sharpening an axe. What is its angular acceleration?
Answer:
Angular acceleration [tex]= 0.167[/tex] rad/s^2
Explanation:
Given
Initial Angular velocity (w1) [tex]= 5[/tex] rad/s
Final Angular velocity (w2) [tex]= 0[/tex] rad/s
Time taken to change velocity from w1 to w2 [tex]= 30[/tex] seconds
Angular acceleration is equal to the change in angular velocity to the time taken for making thing change
Hence, Angular acceleration
[tex]\frac{w_2 -w_1}{t} \\\frac{5-0}{30}\\0.167[/tex]rad/s^2
A body accelerates uniformly from rest at 2ms² for 5 seconds . calculate its average velocity in this time.
Answer:
0.4
Explanation:
average velocity =d/t
2/5=0.4
0.4m
what is a possible explanation for a set of facts that can be tested by further investigation called?
1. Questions
2. Hypothesis
3. Experiment
4. Summary
Answer:
Hypothesis.
Explanation:
Not a question, not a summary, and not an experiment.
Why is ultraviolet radiation considered more dangerous to humans than infrared radiation?
ANSWER:Ultraviolet radiation has a shorter wavelength than infrared radiation, and thus, the waves have higher energy. This allows them to penetrate the first layers of skin on humans and can mutate the DNA in the cells of the skin. This can result in cancer because of the mutations caused by the ultraviolet radiation.
HELP ME PLEASE I need the answer now and I will give all my brain lists
Answer:
I'd say it's B
Sorry if I get you wrong-
The process of sediments being compacted and cemented to form sedimentary rocks is called
Answer:
Lithification is the answer.