Answer:
0 mph
Explanation:
Answer:
0 mph
Explanation:
How are particles behaving in solid vs gas when it comes to sound?
Answer:
Sound waves have to travel through solids, gases, and liquids. Sound waves vibrate through the air in matter. Molecules in solids are packed tightly. This allows sound to travel faster through a solid than gas.
The same spring is stretched 5 m. What was the force?
Answer:
La fuerza del resorte es directamente proporcional a la extensión del resorte. En otras palabras, si jalas mucho de la masa, la fuerza será intensa; si jalas poco de la masa, la fuerza será débil.
Explanation:
The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.
Please select the best answer from the choices provided
T
F
Answer:
True.
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;
Force = mass * acceleration
[tex] F = ma[/tex]
Centripetal acceleration is given by the formula;
[tex] Acceleration, a = \frac {v^{2}}{r}[/tex]
Where;
v is the velocity.
r is the radius.
The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.
Let centripetal force be Fc
Fc = ma
Substituting the value of "a" into the above formula;
[tex] Fc = m \frac {v^{2}}{r} [/tex]
[tex] Fc = \frac {mv^{2}}{r} [/tex]
If you wanted the block to remain in the center of the table what masses of blocks would you add and where? Use the letters going around the table to identify their locations and tell me the mass you would make the block at that location (for example Point B 6000g)
Answer:
The work done is twice as great for block B because it is moved twice the ... Equal forces are used to move blocks A and B across the floor. ... Does the normal force of the floor pushing upward on the block do any work? ... Suppose that the mass is halfway between one of the extreme points of its motion and the center point.
Explanation:
Newtons 1st law
What is the resistance to this unbalanced force in football?
Answer:
Newton's first law of motion states that an object's motion will not change unless an unbalanced force acts on the object. ... The football player in the photo above is in motion. He will stay in motion unless players on the other team exert an unbalanced force against him.
Explanation:
https://flexbooks.ck12.org/cbook/ck-12-middle-school-physical-science-flexbook-2.0/section/1.4/related/rwa/football-physics/
LINK
Disadvanlayes and advantager of the and A and B
Answer:
Advantages
If there is a fault in one of the electric appliances, the current is able to pass through different paths of the circuit.
Disadvantages
In parallel circuits, we cannot increase the voltage since the resistance decreases in the parallel circuit.
Explanation:
pressure, V is volume , T is temperature of a gas and R is gas constant.
b) Can the sum of two equal vectors be equal to either of the vectors?
Explain
On Earth, what can a divergent boundary
cause?
A. An iceberg
B. A plateau
C. A rift valley
Answer: C
Explanation:
Divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges.
Why do other stars look much dimmer than the sun?
What happens when weathering and erosion work together?
A. New mountains are created
B. The climate changes overnight
C. Metal objects become rusty
D. They change the earths surface
Plssss help
Answer:
A. New mountains are created
Which of the following characteristics indicates a high level of adaptability to change over
time?
A. Needs routines that stay the same
OB. Insists on doing things her own way
C. Not easily influenced by peer pressure
OD. Open to new ideas and experiences
In some areas, hydroelectric power is not geographically appropriate and a different renewable energy source would be a better option. A conservation group is looking for renewable energy sources other than hydroelectric energy that could be used to generate electricity in grassland ecosystems, such as in the midwestern United States or in a savanna in Africa.
Required:
a. Propose a different renewable resource to use that would be a realistic solution to generating electricity without using fossil fuels or hydroelectric power in a grassland ecosystem.
b. Justify the solution proposed above by explaining a potential advantage of using a different renewable resource to generate electricity.
Answer:
a) wind power system, turbines powered, solar power system
b) the possibility of creating jobs for the local workforce and of maintaining the environment without damaging it.
Explanation:
In a grassland system it may not have great changes in height or mountain system where it is easy to represent a river, therefore a hydroelectric power system is not very feasible.
a) You can have several alternative energy systems.
* If there is a fairly constant air current, a wind power system could be implemented.
* If there is a river with an acceptable flow, a generation system can be implemented with turbines powered by the river flow.
* Another system is a solar power system
b) To select any of the possible systems proposed, the current and future energy requirements of the region must be analyzed.
The amount of energy that each proposal can supply
Analyze the installation costs and the economic benefits of a given system.
Study the possible problems for the maintenance of each system.
A great advantage of these systems is the possibility of creating jobs for the local workforce and of maintaining the environment without damaging it.
The most plausible renewable energy source in a grassland is wind energy.
Renewable energy refers to energy that is obtained from wind, water biomass or underground heat. All of these sources of energy are inexhaustible and hold great prospect to solving the current energy deficit is many parts of the world.
In grasslands, the most plausible renewable source of energy is wind. Winds are abundant in grasslands . It is more plausible than hydroelectric power because it does not create any adverse environmental impact. It is the cleanest energy source.
Learn more about renewable energy: https://brainly.com/question/4038933
Weight is the amount of matter in an object.
True or False
Answer:
False
Explanation:
The mass of an object is normally known as the weight of the object. but mass is the amount of matter in the object. Weight is the force exerted on an object by gravity
Answer: False
Explanation: mass is the amount of matter in an object
sun *
a.) the hunter
b.) Pole Star
c.) little bear
d.) pattern of stars
e.) nearest star
Plz help :> <3
Answer:
E
Explanation:
Calculate the gravitational pull between the Earth and the Moon
Answer:
F = 1.99 10²⁰ N
Explanation:
The gravitational attraction is given by the expression
F = [tex]G \ \frac{m_1m_2}{r^2}[/tex]
where G is the constant of attraction 6.67 10⁻¹¹ N m²/kg²
in this case the bodies are the Earth and the Moon
let's calculate
F = [tex]6.67 \ 10^{-11} \ \frac{ 7.36 \ 10^{22} \ 5.98 \ 10^{24} }{ (3.84 \ 10^8)^2}[/tex].67 10⁻¹¹ 7.36 10 22 5.98 1024 / (3.84 108) 2
F = 1.99 10²⁰ N
1. A Zambeef delivery track travels 18 km north, 10 km east, and 16 km south. What is its final displacement from the origin?
Answer:
10.2 km
Explanation:
Displacement is the shortest distance from your original position after movement.
Now, the Zambeef delivery truck moves 18 km north and then 10 km east and then 16 km south.
This means that vertically the truck is 2km short of the 18 km he travelled north..
So we can find the displacement using pythagoras theorem..
Let d be the distance from the current position to the initial position.
Thus;
d² = 2² + 10²
d² = 4 + 100
d = √104
d ≈ 10.2 km
I have attached a diagram showing the direction of this displacement
Describe how a radiation is similar to b- radiation
Complete question is;
Describe how α-radiation is similar to β-radiation?
Answer:
Explained below
Explanation:
The similarity between both alpha radiation and beta radiation is that in both cases, they both show deflection when they go through electric and magnetic fields. Although alpha deflects towards the negative plate while bets deflects towards the positive plate.
Secondly they both have high speeds. Just that alpha is from the helium nucleus while beta is from electrons.
BRAINLEST FOR CORRECT ANSWER
Which has more momentum: a 3 kg sledgehammer swung at 1.5 m/s OR a 4 kg sledgehammer swung at 0.9 m/s? SHOW YOUR WORK FOR BRAINLEST
Answer:
3kg sledgehammer swung at 1.5 m/s
Explanation:
Small Sledgehammer:
Mass:3.0
Velocity:1.5
MASS×VELOCITY=MOMENTUM
3.0×1.5= 4.5 (momentum)
Large Sledgehammer:
Mass:4.0
Velocity:0.9
4.0×0.9=3.6 (momentum)
higher momentum is the smaller Sledgehammer.
convertion of unit 8.28x10^-2ft m
Answer:
yes
Explanation:
no
A pendulum is swimging. It swings 85 complete swings and this takes 102 seconds. What is the frequency?
Answer:
0.833 Hz
Explanation:
While, there are plenty of ways to calculate frequency, the one formula you should use in this case is:
#times/seconds --> 85/102
= 0.833 Hz
In a
boundary, the more dense
plate will move below the less dense plate
when the plates collide.
A. transform
B. divergent
C. convergent
What are the key features of stem cell therapy?
Answer:
The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.
Answer:
Stem cells have the ability to differentiate into specific cell types. The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.
Gravitational potential energy is
O the energy that an object has when it is at a
certain elevation, h
the energy of an object at rest
O the energy that an object has because it is in
motion
The cnone of the above