Answer:
The momentum of bike is more.
Explanation:
Given that,
Mass of the kid, m = 100 kg
Speed of the bike, v = 10 m/s
The momentum of the kid is given by :
p = mv
So,
p = 100 kg × 10 m/s
p = 1000 kg-m/s
Mass of the truck, m = 5000 kg
Speed of the truck, v = 0.1 m/s
The momentum of the truck is given by :
p = 5000 kg × 0.1 m/s
= 500 kg-m/s
So, the momentum of the kid riding a bike is more than that of the truck.
Determine the acceleration of a car of mass 900 kg, when a net force of 2700 N acts on it.
1. In the following circuit,which bulb lights first?
A) Bulb A
B) Bulb B
C) Bulb C
D) They all light at the same time
E) A and C light first, B lights after them.
Answer:
Bulb B is the answer
What is the acceleration of a racing car if it's speed is increased uniformly from 44 m /s to 66 m / s over an 11 second period ?
Answer:
the acceleration of the race car is 2 m/s²
Explanation:
Given;
initial velocity of the race car, u = 44 m/s
final velocity of the race car, v = 66 m/s
time of motion of the race car, t = 11 s
The acceleration of the race car is calculated as;
[tex]a = \frac{v-u}{t} \\\\a = \frac{66-44}{11} \\\\a = 2 \ m/s^2[/tex]
Therefore, the acceleration of the race car is 2 m/s²
Describe how a magnetic field moves in a magnet. plz help!!
Answer:
In a permanent magnet, the magnetic field comes from the motion of the electrons inside the material, or, more precisely, from something called the electron spin. The electron spin is a bit like the Earth spinning on its axis. The magnetic field is a vector, the same way the electric field is.
Explanation:
What is hydrogens outer most energy level
Answer:
Students should realize that each atom in a group has the same number of electrons in its outermost energy level. For instance, hydrogen, lithium, sodium, and potassium all have 1 electron on their outer energy level. Let students know that these electrons in the outermost energy level are called valence electrons.
If a light ray from a candle strikes a mirror at an angle of 40 degrees with the normal, at what angle will the ray reflect?
A. 20 degrees
B. 25 degrees
C. 40 degrees
D. 60 degrees
E. 80 degrees
Answer: 20
Explanation:
What is the specific heat of a metal if it takes 15,000 J of heat to raise the temperature of 20 points
a 620-9 sample from 15.0C to 85.0C?
Answer:
0.5 0c
Explanation:
yes yes yes yes
Choose all the answers that apply.
Currently, children are vaccinated for _____.
whooping cough
cancer
chicken pox
measles
polio
Answer:
Measles and Whooping Cough
Explanation:
I really hope so
Answer:
Hey
Explanation:
HELPPP PLEASE I GIVE BRAINLIST
handles on kitchen stove pots are usually made of wood mainly because of ?
A ) Conduction
B ) Convection
C ) Radiation
D ) Condensation
Answer:
(B) Conduction
Explanation:
Answer:
a ) conduction
Explanation:
it's a because if u think about it a conductor keeps the heat from getting to a certain part of the metal
What is the station 2 code for cupids spread the love escape room?
Answer:CADB
Explanation:
Please help me please I need someone to help me with all this question 1) How do we calculate the momentum of a race car? What part of this changes during a collision? 2) What happening to the momentum of the car when they crash? 3) how does impulse factor into this? 4) what type of collision is it ( ideally) when cars crash into this SAFER barrier?
Answer:
Explanation:
1 ) Momentum of a race car = mass of car x velocity of car . During a collision , an external force acts on the car which changes the momentum of the car in the direction in which force acts .
2 )
The momentum of the car decreases as external force acts against the momentum . Sometimes when external force is very high , direction of momentum is reversed .
3 ) Impulse is force x time of action of force . Generally time of action of force in large collision is very small . so it is calculated very carefully .
Impulse = change in momentum .
4 ) The type of collision is inelastic . In this type of collision , car crashes into safer barrier , sticks to it . It does not rebound from the barrier . In case of elastic collision , rebound creates large impulse creating huge damage to the car .
Question 1
2 pts
Sally, who has a mass of 56 kg, is sledding at the park. She places her 7-kg sled at the
top of a hill and then runs with a velocity of 3 m/s and jumps on it. What is the
combined velocity of Sally and the sled right after she jumps on, in m/s? (Round your
answer to one decimal place if necessary.)
Question 2
2 pts
Are the two atoms shown below in the image from the same element?
The answer is yes
They are isotopes.
please help with this
Answer:I have to say 56
Explanation: because it is going up by 8
Polar neurons are the most abundant neurons in your body
True or False
Answer:
True
Explanation:
Can we track the movement of energy in nature
What is the number of
Protons-
Electrons-
Neutrons-
that are in bismuth?
Explanation:
Number of :
Protons - 83
Neutrons - 126
Electrons - 83
In Bismuth.
Also it has a atomic mass of 208.98038 units.
Brainliest and a bunch of points- plz help! Also add explanation
Answer:
i believe it's the first one
Explanation:
i'm not entirely sure but i hope this helps :) have a nice day !!
A kayaker moves 18 meters southward, then 32 meters
northward, and finally 24 meters southward.
what was the distance it moved
what is the magnitude and direction of the displacement
What is the number used as the Gravitational Constant?
Answer:
G is called the constant of gravitation and is equal to 6.67 × 10−11 newton-metre2-kilogram−2.
Explanation:
Sally pulls a sledge
The kangaroo stops at a lake for a drink of water, then starts hopping again to the south. After 5 seconds, the kangaroo is going 2.5 m/s south. What is the kangaroo’s acceleration?
Answer:
A kangaroo hops 60 m to the east in 5 s. What is the kangaroo's average velocity? ... The kangaroo stops at a lake for a drink of water and then starts hopping again to the south. Each second, the kangaroo's velocity increases 2.5 m/s.
What were the organic compounds Professor Wadhwa found and why are they important?
Answer:
Organic compounds are important because all living organisms contain carbon. They are the basic components of many of the cycles that drive the earth. For example, the carbon cycle that includes the exchange of carbon between plants and animals in photosynthesis and cellular respiration.
A. Ears
B. Air
C. Water
D. Rocks
Answer:
A Ears
Explanation:
hgvjjghingyjbvh
HELP I GIVE BRAINLIST
what are the drawbacks of relying on fossil fuels ?
A ) Increased levels of atmospheric carbon dioxide
B ) A reduction of air pollution levels in cities
C ) Unlimited supplies of coal, oil, and natural gas
D ) Fossil fuels always burn perfectly, so there are no drawbacks
Answer:
A) Increased levels of atmospheric carbon dioxide
Explanation:
All of the other options are positive effects
All music, _______ in the world, is from only ______ notes.
Answer:
All music in the world, is form only two notes and those notes are described below in detailed explanation.
Explanation:
In the chromatic scale, there are basically seven central musical notes, designated A, B, C, D, E, F, and G. They individual express a separate pitch or frequency. For illustration, the "central" A note has a pitch of 450 Hz, and the "common" B note has a pitch of 495 Hz.
Varieties Of Musical Notes You Require To Understand
Semibreve (Whole Note)
Minim (Half Note)
Crotchet (Quarter Note)
All music, listened to in the world, is from only twelve (12) notes.
A music can be defined as the systematic combination of an instrumental sound and human vocals, in order to produce harmonious tunes or sounds.
A note can be defined as a symbol which is used to denote a musical sound with respect to its pitch and duration.
Basically, all the music that are available and listened to in the world are typically produced from only twelve (12) notes.
This ultimately implies that, any musical piece that you may have come across in this world comprises only twelve (12) notes and these include:
1. A2. A#3. B4. C5. C#6. D7. D#8. E9. F10. F#11. G12. G#Read more: https://brainly.com/question/20245998
Not really understanding this, wouldn't mind some help. : )
Explanation:
Given
Mass (m) = 1200 kg
Acceleration (a) = 3 m/s²
Force (F) = ?
We know
F = m * a
= 1200 * 3
= 3600 Newton.
Therefore the force acting on the car is 3600 Newton.
Hope it will help):)
Which gas in Earth’s atmosphere has increased over time due to burning fossil fuels?
oxygen
nitrogen
water vapor
carbon dioxide
Answer:
D) Carbon Dioxide
Explanation:
I hope this is right!
Answer:
d
Explanation:
Which of the following graphs have the same wavelengths?
Balanced equations account for the conservation of mass.
Please select the best answer from the choices provided
T
F
Answer:
fff
Explanation:
f
Answer:
True
Explanation:
A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow