Answer:
thermal or heat energy
Easy science question please help. Will give brainliest
Answer:
ITS A
ebnjhgfdfghj
Answer:
A.
Explanation:
Because the force of gas is pushing the rocket upward, while the force of gravity is trying to keep the rocket on the ground. (I'm sorry if this is wrong, I haven't been learning about Newton very much recently XD. But based on general knowledge and Google, I'm confident this is correct.)
Proposed Exercise - Circular Movement
Consider four pulleys connected by correals as illustrated in the figure below. One motor moves the A pulley with angular acceleration A= 20 rad/s^2/. If pulley A is initially moving with angular acceleration A= 40 rad/s^2, determine the angular speed of pulleys B and C after three seconds. Consider that the belts do not slide
Answer:
ωB = 300 rad/s
ωC = 600 rad/s
Explanation:
The linear velocity of the belt is the same at pulley A as it is at pulley D.
vA = vD
ωA rA = ωD rD
ωD = (rA / rD) ωA
Pulley B has the same angular velocity as pulley D.
ωB = ωD
The linear velocity of the belt is the same at pulley B as it is at pulley C.
vB = vC
ωB rB = ωC rC
ωC = (rB / rC) ωB
Given:
ω₀A = 40 rad/s
αA = 20 rad/s²
t = 3 s
Find: ωA
ω = αt + ω₀
ωA = (20 rad/s²) (3 s) + 40 rad/s
ωA = 100 rad/s
ωD = (rA / rD) ωA = (75 mm / 25 mm) (100 rad/s) = 300 rad/s
ωB = ωD = 300 rad/s
ωC = (rB / rC) ωB = (100 mm / 50 mm) (300 rad/s) = 600 rad/s
The average swimming speed of a salmon is about 5 ft/s. If a salmon swims at this speed for a full minute, how far will the salmon travel?
300 feet because 5x60=300 and there is 60 seconds in a min
A 35 N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface and the block are 0.6 and 0.3, respectively. A horizontal string is attached to the block and a constant tension is maintained in the string. What is the force of friction acting on the block if the tension is 16 N? Answer in units of N. What is the force of friction acting on the block if the tension is 38 N? Answer in units of N.
Answer:
When the tension is T = 16 N
The frictional force is [tex]F_F = 22.2 \ N[/tex]
When the tension is T = 38 N
The frictional force is [tex]F_F = 11.1 \ N[/tex]
Explanation:
From the question we are told that
The weight of the block is [tex]w = 35 \ N[/tex]
The coefficient of static friction is [tex]\mu_s = 0.6[/tex]
The coefficient of kinetic friction is [tex]\mu_k = 0.3[/tex]
considering when the tension is T = 16 N
[tex]W > T[/tex] This implies that that block will not slide
Hence the frictional force is mathematically evaluated as
[tex]F_F = \mu_s * W[/tex]
=> [tex]F_F = 0.6 * 37[/tex]
=> [tex]F_F = 22.2 \ N[/tex]
considering when the tension is T = 38 N
[tex]W < T[/tex] This implies that that block will start sliding
Hence the frictional force is mathematically evaluated as
[tex]F_F = \mu_k * W[/tex]
=> [tex]F_F = 0.3 * 37[/tex]
=> [tex]F_F = 11.1 \ N[/tex]
This is a graph of a car speeding up and then reaching a constant speed of 12m /s. After it finishes speeding up, how far does the car travel during the last 6 seconds of the graph , from 4s to 10 s?
Answer:
After it finishes speeding up, the car goes 72 [m]
Explanation:
To solve this problem we must first understand the graphics. It is clear that in the last 6 seconds, that is, from the fourth to the tenth second, the car moves at a constant speed.
Therefore in this time interval, the car moves at a constant speed.
With the following equation of kinematics, we can calculate the distance traveled.
[tex]x=x_{o}+v*t \\[/tex]
where:
x = final point [m]
x₀ = initial point [m]
v = constant velocity = 12 [m/s]
t = time = 6 [s]
Now replacing we have:
[tex]x-x_{o} = 12*6\\x-x_{o}=72 [m][/tex]
Which one effect that burning fossil fuels has on the environment
Calculate the acceleration of a 270000-kg jumbo jet just before takeoff when the thrust on the aircraft is 160000 N .
Answer:
The answer is 0.59 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{160000}{270000} = \frac{16}{27} \\ = 0.592592...[/tex]
We have the final answer as
0.59 m/s²Hope this helps you
Electrical energy is transformed into mechanical energy in a motor when the
electromagnet consistently turns in the same direction. What part of the
motor causes this motion?
A. The loop of wire
B. The permanent magnets
C. The commutator
D. The battery
Answer:
the commutator
Explanation:
took the quiz!
The part of the motor that causes the consistent motion of the electromagnet in the same direction is the commutator. The correct answer is C. The commutator.
The commutator is a critical component in a motor that enables the conversion of electrical energy into mechanical energy. It consists of a set of copper segments connected to the rotating coil or armature of the motor. As the armature spins, the commutator ensures that the electrical current flowing through the coil changes direction at the right time.
This change in current direction creates a rotating magnetic field that interacts with the permanent magnets, resulting in a continuous rotational motion of the motor. In essence, the commutator acts as a switch, controlling the flow of current and ensuring the electromagnet rotates in a consistent direction.
Therefore, the part of the motor that causes this motion is C. The commutator.
For more details regarding electrical energy, visit:
https://brainly.com/question/1580875
#SPJ6
12. Nitrogen is Nz. One molecule of nitrogen gas is made up of
a. Two atoms of nitrogen
b. One atom of nitrogen and one atom of oxygen
C. One atom of nitrogen
d. Two atoms of nitrogen and one atom of oxygen
Answer:
A that the only answer that I know
Why would you want to slow down the movement of heat?
Answer: heat is transferred to and from objects -- such as you and your home -- via three processes: conduction, radiation, and convection.
Explanation:
Hopes this helps!
Sulfur difluoride consists of a central sulfur atom and a fluorine atom on each side. Draw a model of the molecule formed by putting lines between the atoms to represent bonds so that each atom has the correct number of bonds.
Answer:
F - S - F
Explanation:
Answer:
F-S-F
Explanation:
PLATO ANSWER
Which one do I press guys?
Answer:
The Nucleus...
Explanation:
E
What makes the element named iron (Fe) different from the element named nickel (Ni)? A. Iron is a solid but nickel is a gas. B. The only difference is the name of the element. C. Atoms of iron are different from atoms of nickel. D. Iron is made of atoms but nickel is not.
Answer:C, Atoms of iron are different from atoms of nickel.
Explanation:All the atoms that make up each type of element are alike, and they are different from the atoms that make up every other type of element. So the element iron is different from the element nickel because the atoms that make up the iron are different from the atoms that make up the nickel.
The support condition of the truss shown as Figure 1 below are such that the truss is pinned at
A and supported by pin rollers at E. The truss is subjected to loading as shown on the Figure.
a) Calculate the reactions at supports A and E.
b) Calculate the force in each member of the truss. Reproduce and fill in the given table
by placing your answers in the columns designated (Force in the member) and
(Nature of the Force i.e. strut or tie)
80KN
с
90KN
3m
D
B
60kN
4m
А
E
F
40 KN
3m
3
3
Зm
how many hours does earth take to complete one rotation?
Answer:
24 hours take earth to complete rotation
How do we use Hydro-Electric? Use in your own words.
Answer:
( I SUGGEST THAT YOU READ EVERYTHING ) Hydropower does not pollute the water or the air. However, hydropower facilities can have large environmental impacts by changing the environment and affecting land use, homes, and natural habitats in the dam area.
Explanation:
Nowadays, huge power generators are placed inside dams. Water flowing through the dams spin turbine blades (made from metal instead of leaves) which are connected to generators. Power is produced and is sent to homes and businesses. Hydropower is the most important and widely-used renewable source of energy. Most hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator. The power extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. Reservoirs and hydropower are often thought of as “clean energy” because they don't burn fossil fuels to produce electricity. Research released within the last year has confirmed that dams and reservoirs are a major source of greenhouse gas emissions driving climate change. Because hydropower plants can generate power to the grid immediately, they provide essential back-up power during major electricity outages or disruptions. In addition to a sustainable fuel source, hydropower efforts produce a number of benefits, such as flood control, irrigation, and water supply. There are numerous environmental consequences of damming water, flooding entire areas, creating massive reservoirs, changing water flow, blocking the natural course of rivers, and constructing power lines and roads. There are only a limited number of places where these power plants can be built. Hydroelectric power has many advantages: it produces very little pollution; it is affordable; and the plants are energy-efficient, require little maintenance and are easy to stop and start. Besides being inexpensive, nuclear power produces little air pollution or greenhouse gases and can be contained in a small space.
How has Psychology changed the way you think about yourself, others, or how the world works so far? Come up with at least one specific example of how you've applied something from psychology to interpret behavior or an experience, or to influence others.
Answer:
How does psychology help us understand ourselves?
1. Increased self-understanding and insight. This is a no-brainer: By learning about psychological constructs, such as dimensions of personality, we can better understand ourselves, our motives, and our patterns of behavior. Psychological assessments allow us to better know and understand our true selves.
7. How many forces are acting on this object? *
Fnorm
Ffrict
Fapp
Fgray
Å
Answer:
4
Explanation:
As you can see in the free body diagram there are 4 forces acting on the body.
A student determines the density, solubility, and boiling point of two liquids, Liquid 1 and Liquid 2. Then he stirs the two liquids together and heats them. After stirring and heating the liquids, two different liquids form, Liquid 3 and Liquid 4.
Then the student determines the density, solubility, and boiling point of Liquids 3 and 4. He concludes that a chemical reaction occurred. Here are his results:
Dentity)
Soluble in Berling
Point
ܠܐ L
164
Yes
0.87
1500
Liquid
0.96
Yes
Liquid 2
Yes
and heating
Liquid
166
Loud
100
How does the student know that a chemical reaction has occurred?
The student knows that a chemical reaction has occurred because Liquid 3 has different properties than Liquid 4.
The student knows that a chemical reaction has occurred because Liquid 1 has different properties than Liquid 2.
The student knows that a chemical reaction has occurred because Liquids 3 and 4 have different properties than Liquids 1 and 2.
The student knows that a chemical reaction has occurred because a chemical reaction always occurs when two liquids are mixed together.
Answer:
The student knows that a chemical reaction has occurred because Liquids 3 and 4 have different properties than Liquids 1 and 2.
Explanation:
What would happen to moon if gravity no longer affected it?
Answer: The moon would continue to move on its orbital path.
Explanation:
A dog is walking back home and its motion is modeled by the graph above. What position was the dog at 3 seconds after it started walking home?
How does a radio work?
by transmitting and receiving electromagnetic waves. The radio signal is an electronic current moving back and forth very quickly. A transmitter radiates this field outward via an antenna; a receiver then picks up the field and translates it to the sounds heard through the radio.
What are the negative effects of retirement?
Answer:
boredom..............
Answer:
health effects
Explanation:
decrease in mobility and mental health also a decrease in illness conditions
If I wanted to measure the mass of an object rather than the weight, what should I use
Answer:
the most common way to measure mass is using a balance.
Select all of the characteristics associated with freshwater ponds. (Click multiple answers)
Answer: The signs of a well-balanced pond include healthy fish, clear water, thriving plants, and minimal pests such as algae.
All of the following steps are included in a self-modification program except __________. A. specifying target behavior B. designing a program C. focusing on one goal at a time D. gathering data about target behavior
(Psychology)
Answer:
C)focusing on one goal at a time
Explanation:
Self-modification programs could be regarded as a program that help individual in managing unwanted as well as dysfunctional behavioral responses whenever they are going through a problem and try to deal with it. For instance the dysfunctional behavioral response for someone with a panic attack is avoidance. Some of the the steps that are involved in in a self-modification program are;
✓ specifying target behavior ✓designing a program
✓ gathering data about target behavior
Answer:
c
Explanation:
on edge 2020
ceres orbits the sun every 1680 days. calculate how many seconds it takes for ceres to complete one orbit.
Answer:
Ceres takes 1,682 Earth days, or 4.6 Earth years, to make one trip around the sun. As Ceres orbits the sun, it completes one rotation every 9 hours, making its day length one of the shortest in the solar system.
Which of the following values could possibly be vector magnitudes
meaning that, combined with a direction, they could become vector
quantities?
Check all that apply.
A. 6 miles
B. 5 meters
C. 12 hours
D. 30 kilometers/hour
Answer:
5 meters, 6miles, 30 kilometers/hour
Explanation:
just did the test on a.p.e.x
Jim pushes hard on a rock that weighs 500 pounds. He pushes with a force of 50 pounds, but the rock doesn't move. How much work did Jim do?
---> Please answer and explain it!! I can't understand this question! Thank you so much!
Answer:
Zero work
Explanation:
Recall that work done on an object is defined as the product of the net force applied to an object times the distance it travels in the same direction as the force.
Since in this case Jim used a given force to push a rock, but it didn't move, then he did zero work (because the distance moved is zero).
1) A parked car starts to move with a constant velocity of 3 m/s, after moving
3.4 seconds, how far did the car go?
Answer:
velocity (v) =distance(s) ÷ time (t)
Explanation:
v=s÷t
s=v×t
s=3×3.4
s= 10.2m
