Answer:
no, when a plastic rod is rubbed with a duster, electrons are transferred from one material to the other. The material that gains electrons becomes negatively charged. The material that loses electrons becomes positively charged.
Explanation:
Help me please please
answer a makes the most sense.
hope this helps
The cricket player while catches the ball wears gloves and why
Answer:
the ball is travelling very fast and the player can get injured if he doesn't wear gloves
Explanation:
When an object slides,there is less friction than when it rolls
Answer:
False
Explanation:
Rolling friction takes place when an object rolls on the surface. Sliding friction takes place when two surfaces are rubbed against each other. Rolling friction is much less than sliding friction for same pair of bodies. When one body rolls upon another, there is theoretically no sliding or slip between them.
Which of the following electrical components is a temporary electrical energy storage device?
- Capacitor
- Transistor
- Resistor
- Fuse
Answer:
A capacitor
Explanation:
Because it can store electric energy when disconnected from its charging circuit. Commonly used in electronic devices to maintain power supply while batteries change.
Hope this helps! :)
pls help will mark brainliest
How do the phases change when our perspective changes from the Earth to the Moon?
Label the lettered parts of the wave
Answer:
A: Wavelength
B: Crest
C: Trough
D: Amplitude
A 5kg bowling ball is rolling with 75kg*m/s. How fast is it going?
Answer:
you are going 1 mile per hour depending on how fast
Explanation:
what is a variable that gives location relative to an origin?
Answer:
The position variable gives location relative to an origin.
Explanation:
Position (displacement) gives location relative to an origin, but distance does not.
In the nuclear equation:
222 86 Radon becomes 4 2 Helium plus blank.
The characteristics of the missing particle are ________________.
Z = 84, A = 220
Z = 88, A = 218
Z = 84, A = 218
Z = 85, A = 220
Answer:
C
Explanation:
Z = 84, A = 218
trust, got a 100 :)
In a race, a car travels 60 times around a 3.6km track. This takes 2.4 hours. What is the average speed of the car?
Answer:
multiply
Explanation:
multiply
Answer:
90km/h
Explanation:
Radio telescopes beam radio waves into space. To calculate the speed of the radio waves in space, which information, if any, is necessary?
Answer:
No more information is needed
Explanation:
Radio waves are electromagnetic energy, lower frequency forms of this type of energy that includes light and cosmic rays on the high frequency end that we are able to detect. So in free space (vacuum), radio waves travel at their fastest velocity, the “speed of light”. The reason for the quotation marks is because when light or radio waves are propagating through matter, we observe them traveling more slowly.
Write 3 major differences between a shadow and a image?
Explanation:
Image Shadow
2. We are able to see images when light refraction enters our eyes.
In the case of shadow no light enters our eyes.
3. Image contains colour, structure etc. of the object.
Shadow does not give any information about the object as it is colourless
Answer:
We know that an image is a picture of an object while shadow is formed an object comes in between the surface and light. ... The formation of image takes place when the light rays are reflected by an object. The formation of shadow takes place when the light falls on an opaque object.
A 50 n force is acting on a lever 1.5 m from the fulcrum balances an object 1m from the fulcrum on the other arm. what is the weight of the object in n and what is the mass in kg
Answer:
A 100 N force acting on a lever 2 m from the fulcrum balances an object 0.5 m from the fulcrum on. ... What is the weight of the object(in newtons)? What is its mass (in kg)? ... mass at the one end and effort arm is the distance between pivot and effort applied at the other end.
Explanation:
hpoe this helps you.
A stationary, 32 kilogram ice skater catches a 0.5 kilogram snowball thrown at a speed of 45 meters per second. The collision is totally inelastic. How fast, in meters per second, does the skater (and snowball) move afterward? Friction of the skater on the ice is negligible.
Answer:
V = 0.69 m/s
Explanation:
Given that,
The mass of a ice skater, m₁ = 32 kg
The initial speed of the ice skater, u₁ = 0
Mass of a snowball, m₂ = 0.5 kg
The initial speed of a snowball, u₂ = 45 m/s
eIt is mentioned that the collision is totally inelastic. Let V be the common speed of skater and the ball. So, using the law of conservation of momentum.
[tex]m_1u_1+m_2u_2=(m_1+m_2)V\\\\V=\dfrac{m_1u_1+m_2u_2}{m_1+m_2}\\\\V=\dfrac{32\times 0+0.5\times 45}{32+0.5}\\\\V=0.69\ m/s[/tex]
So, the common speed is equal to 0.69 m/s.
PLEASE HELP ME I AM TIMED!
Fari & Olaya are standing at the top of a hill at the same height. An observer stated that 'Olaya has gained more Gravitational Potential energy than Fari.
How can you justify this statement on the basis of two physical quantities (weight & height) Gravitational Potential energy depends upon?
Answer:
olaya weighs more than fari
HELP MEEE
Resonance occurs in the middle ear.
Please select the best answer from the choices provided
T
F
Answer:
The answer should be True, but it's False on Edge 2021
Explanation:
이것이 도움이 되었기를 바랍니다.
(✿◡‿◡)
#LearnWithBrainly
-Jiyen~
What would a series circuit be used for?
A. to power a battery
B. to light a lamp
C. as a voltage divider
D. convert chemical energy to thermal energy
Answer:
C
Explanation:
a series circuit would be an odd choice to power a battery or light a lamp when a direct would be much more efficient, and it's not converting types of energy, so C is the best possible answer
Radio waves are the ___ waves and have the ___ amount of energy.
The answer would radio waves have the longest waves and have the least amount of energy.
Hope that helps!
what is power, and what is its relationship to voltage and amperage?
Name one metal and one non-metal from the periodic table?
Y’all I need help
Thank you!
Answer:
Zinc and Neon!
Explanation:
zinc is an element that is a transition metal and neon is a noble gas
Plz don’t send me link over what the answer is just tell me. What force is represented by the vector?
A. friction
B. gravity
C. normal force
D. push
Answer:
B. gravity
Explanation:
The ball if moving down so gravity is acting on it because it is pulling it down to earths toward the center of earth aka the ground.
which is a dopant for a p-type semiconductor?
a. arsenic
b. indium
c. phosphorus
d. antimony
GIZMO
A. Does the car's mass alone determine whether the egg breaks?
B. Does the car's speed alone determine whether the egg breaks?
C. Does the car's momentum determine whether the egg breaks?
D. Does the car's kinetic energy determine whether the egg breaks?
PLEASE HELP!!!!!!!!!!!!!!!!
Which has more momentum, 3.0 kg mass moving at 4.2m/s [N] or a 1.5 kg mass moving at 8.5 m/s [N]?
Answer:
The answer of this question is
Explanation:
1.5 kg mass moving at 8.5 m/s (N).
2. A hit used on a ball below the shoulders
1. Bump
2. Set
3. Serve
4. Spike
Answer:
Bump
Explanation:
Also called the forearm pass; An underhand pass hit with your forearms when the ball is below your shoulders; used to receive the serve.
The density of a substance can be found with the help of:
please help lol will mark brainliest
Answer: im thinking its the first choice >_< im so sorry ifits wrong (35,45300)
Explanation: im really sorry if this is wrong im really really really sorry im really sorry
There is a bell at the top of a tower that is 95 m high. The mass of the bell is 21 kg. What is the potential energy of the bell?
Answer:
19,551 J!
Explanation:
The formula is PE = ham (h=height, a= acceleration or 9.8, m= mass)
PE = (95)(9.8)(21)
PE = 19,551 Joules