Answer:
A radiator emitting warm air and drawing in cool air is an example of convection current
Explanation:
I am guessing you meant "A radiator emitting warm air and drawing in cool air'
Answer:
A radiator emitting warm air and drawing in cool air
Explanation:
Which example illustrates Newton's first law? O A. The force of a wheelbarrow on the ground is equal to the force of the ground on the wheelbarrow. B. More mass is added to a wheelbarrow, and a larger force is required to move it. C. A person pushes a wheelbarrow, causing it to move forward. D. The force of a wheelbarrow on the ground is in the opposite direction of the force of the ground on the wheelbarrow.
A person pushing a wheelbarrow, causing it to move forward, is the example that illustrates Newton's first law. The correct option is C.
What is force?Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
According to Newton's first law, a body tries to maintain its motion until or unless the external force is not applied to it.
If a body is at rest, try to rest if the body is in motion, try to be in motion until or unless an external force is not applied to it.
The wheelbarrow being propelled forward by a human is an illustration of Newton's first law.
Hence, the correct option is C.
Learn more about the force here:
https://brainly.com/question/26115859
#SPJ2
what the difference between heat and temperature
Explanation:
hopefully this helps.
How much net force must Mrs. McD’s 30,000 kg jet plane develop to achieve an acceleration of 1.5 m/s2?
Answer:
F = 45000 [N]
Explanation:
To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.
ΣF = m*a
Where:
F = force [N] (units of Newtons)
m = mass = 30000 [kg]
a = acceleration = 1.5 [m/s²]
[tex]F = 30000*1.5\\F = 45000 [N][/tex]
A 10 kg ball moving at 13 m/s strikes a 20 kg ball at rest. after the collision the 10 kg ball is moving with a velocity of 7m/s.what is the velocity of the second ball?
Answer:
30 (kg)
Explanation:
therefore the mass of the ball is 2 so 30 (kg)
The velocity of the second ball after it was struck by the first ball is 3m/s.
Given the data in the question;
Mass of ball 1; [tex]m = 10kg[/tex]Initial velocity of ball 1; [tex]u_1 = 13m/s[/tex]Final velocity of ball 1; [tex]v_1 = 7m/s[/tex]Mass 2; [tex]m = 20kg[/tex]Since ball to was at rest
Initial velocity of ball 2; [tex]u_2 = 0[/tex]Final velocity of ball 2; [tex]v_2 =\ ?[/tex]
To determine the velocity of the second ball, we use conservation of linear momentum:
[tex]m_1u_1 + m_2u_2 = m_1v_1 + m_2v_2[/tex]
We substitute our given values into the equation and solve for "[tex]v_2[/tex]"
[tex][10kg * 13m/s] + [ 20kg * 0] = [10kg * 7m/s] + [ 20kg * v_2] \\\\130kgm/s = 70kgm/s + [ 20kg * v_2]\\\\ 130kgm/s -70kgm/s = 20kg * v_2\\\\60kgm/s = 20kg * v_2\\\\v_2 = \frac{60kgm/s }{20kg} \\\\v_2 = 3m/s[/tex]
Therefore, the velocity of the second ball after it was struck by the first ball is 3m/s.
Learn more: https://brainly.com/question/3919957
PLZ HELP!!!!!!!!!!!!!
Answer:
The answer is D
Explanation:
Because the car is accelerating (moving) south at a speed of 45. Hope this helps for you. :)
Four bowling balls are each rolled down lanes. Which of the following balls has the
highest inertia?
A.) A 1-kg ball rolling at 2 m/s
B.) An 8-kg ball rolling at 2 m/s
C.) A 3-kg ball rolling at 9 m/s
D.) A 2-kg ball rolling at 10 m/s
Answer:
B
Explanation:
The 8 kg ball rolling at 2m/s has the highest inertia.
The following information related to the inertia is:
It is the resistance with respect to the physical object for any change to the velocity. It involves the changes made to the speed of the object, direction of the motion.Therefore we can conclude that the 8 kg ball rolling at 2m/s has the highest inertia.
Learn more: brainly.com/question/22610586
8. What is the yellow powder in plants that contains sperm cells called?
c. seed coat
a. pollen
d. conifer
b. embryo
Answer:
Its called pollen. Pollen is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells).
Hope this helps, have a great day/night and stay safe!
give some names of vector quantities?
Answer:
In contrast to vectors, ordinary quantities that have a magnitude but not a direction are called scalars. For example, displacement, velocity, and acceleration are vector quantities, while speed (the magnitude of velocity), time, and mass are scalars.
what is free nitrogen
Answer:
It is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond
Explanation:
Answer:
It is molecule nitrogen N2.
Explanation:
Plz mark as brainliest
What is muscle memory?
five or more sentences.
Answer:
Muscle memory is a form of procedural memory that involves consolidating a specific motor task into memory through repetition. This has been used synonymously with motor learning. These motions become instinctive, something we do without planning. This allows us to move and play smarter and faster over time. Muscle memory really has to do with the nerves that communicate with the muscle to allow them to move in the proper sequences for certain movements.
!!!!help me asap pls<3
Answer:
lower hill would have more kinetic energy
3. As the ice melts into liquid water, what happens to the kinetic energy of the particles in the sample?
4. How does the kinetic energy of the particles in the sample relate to the sample’s temperature?
Answer:
As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.
Explanation:
As the ice melts into liquid water, the kinetic energy of the particles in the sample increase. The temperature of the sample is directly proportional to the kinetic energy of the particle.
What is Kinetic energy?The kinetic energy of an object is the energy which it possesses due to the motion of the object. Kinetic energy is defined as the work which is needed to accelerate a body of a given mass from the rest position to its stated velocity. The body of an object maintains the same amount of kinetic energy which it gained during its acceleration unless its speed changes.
The temperature is directly proportional to the kinetic energy of the object. As the temperature of the object increases the phase of the object changes from solid to liquid.
Learn more about Kinetic energy here:
https://brainly.com/question/26472013
#SPJ6
equal forces that do not cause a change in an object's motion
Answer:
Balanced forces.
Explanation:
The three main forces that stop moving objects are friction, gravity and wind resistance. Equal forces acting in opposite directions are called balanced forces. Balanced forces acting on an object will not change the object's motion. When you add equal forces in opposite direction, the net force is zero.
TRUE OR FALSE- Doing sports activities as your Cardio Training can be just as effective or more effective than running on a treadmill.
For 15 Points.
its true
dsdfsddsfsdfdsg
When representing waves in two dimensions, a ray can be drawn parallel to the crests of the waves
True False
Answer:
I think its true
Explanation: hope it helps
Can anyone please help me put
Answer:
Bulb a
Explanation:
Determine the acceleration of a boat with a final speed of 120 m/s after 30 seconds.
Answer:
ehehehshehehehhehesh
Explanation:
ehehehehheheheeheh
why would a bicycle fairing be helpful on a hand powered vehicle
Answer: AERODYNAMIC BENEFITS
Explanation: The reason why a bicycle fairing will be helpful on a hand powered vehicle is because the fairing design is very important that is a long and also sealed fairing provides the best compensation for the added weight. However,for road riding,a tailbox may actually will not be able to repay the weight penalty.
Which is the best description of kinetic energy?
A: Stored energy
B: Energy of position
C: Energy of motion
D: Total energy
Answer:
C: Energy of motion
Explanation:
One particle has a charge of -1.87 x 10^ -9 while another particle has a charge of -1.10 x 10^ -9 If the two particles are separated by 0.05 m, what is the electromagnetic force between them?
Answer: 7.41 x 10^ -6 N
Explanation:
Formulate a weekly schedule that shows evidence of three different activities beneficial for your muscular system.
(please hurry but also don't work too hard that it's a huuuuuuuge paragraph)
Answer:
Monday - Jog.
Tuesday - Eat at a Salad Bar.
Wednesday - Bike ride.
Thursday - gym.
Friday - Kale Smoothie.
Explanation:
Which of thr following is aharmful effectvof oil spills
Olympic gold medalist Michael Johnson runs one time around the track 400 meters in 38 seconds what is his displacement what is his average velocity
a. Michael Johnson's displacement is 0 m
b. Michael Johnson's average velocity is 0 m/s
a. Michael Johnson's Displacement
Michael Johnson's displacement is 0 m
Since displacement, D = d' - d where
d = initial position and d' = final position.Let d = 0 m (Michael Johnson's starting point).
Since Michael Johnson runs one time round the track, his final position is his starting position. So, d' = 0 m
So, D = d' - d
D = 0 m - 0 m
D = 0 m
So, Michael Johnson's displacement is 0 m
b. Michael Johnson's average velocityMichael Johnson's average velocity is 0 m/s
Average velocity, v = D/t where
D = total displacement and t = total timeGiven that Michael Johnson runs one time round the track of 400 m in 38 s, D = 0 m and t = 38 s
So, v = D/t
= 0/38
= 0 m/s
So, Michael Johnson's average velocity is 0 m/s
Learn more about average velocity here:
https://brainly.com/question/24445340
An optician's test card is fixed at 90 cm behind the eyes of a patient who looks into a plane mirror which is at 300 cm in front of him as shown in the Mirror
Answer:
d = 690 cm
Explanation:
The complete question is:
An optician's test card is fixed at 90 cm behind the eyes of a patient who looks into a plane mirror which is at 300 cm in front of him as shown in the Mirror. At what distance is the card seen by the patient?
So, first of all we need to find the distance between the mirror and the chart. Since, the distance between mirror and person is 300 cm, while the distance between the same person and test card is 90 cm. So, the total distance between the test card and mirror will be 300 cm + 90 cm = 390 cm.
Hence, the image formed of test card in the mirror will be 390 cm behind the mirror. So, in order to find the distance between the person and the image of test card we have to add the distance between person (300 cm) and mirror to this value.
distance between person and image of card = d = 390 cm + 300 cm
d = 690 cm
If the mass of each object is the same, 18 g, which object will have the largest density? *
If 30C of charge is flowing through a circuit in 2 minutes, what is the current?
Answer:
0.25A
Explanation:
Given parameters:
Quantity of charge = 30C
Time taken = 2minutes = 2 x 60 = 120seconds
Unknown:
Current through the circuit = ?
Solution:
To find the current through the circuit, use the expression below;
I = [tex]\frac{Q}{t}[/tex]
Q is the quantity of charge
t is the time taken
Now, insert the parameters and solve;
I = [tex]\frac{30}{120}[/tex] = 0.25A
What are the different forms of treatments available for somatoform disorders?
Answer:
Treatment options include medications, particularly tricyclic antidepressants and SSRIs,21,22 and psychotherapy. Nonpharmacologic treatment strategies (e.g., massage, acupuncture) may also be beneficial. patients initially presented with symptomatic pain due to a shoulder injury.
Somatoform disorders can be treated by psychotherapy and through medications.
What are somatoform disorders?Somatoform disorders are a group of psychiatric disorders whereby patients have a wide variety of clinically significant but unexplained physical symptoms.
The treatment options for somatoform disorders include:
PsychotherapyMedications Yoga and meditationAcupunctureTherefore, somatoform disorders can be treated by psychotherapy and through medications.
Learn more about somatoform disorders at: https://brainly.com/question/27251201
#SPJ2
An object is moving at a constant velocity of 10 m/s for 5 seconds. What is
its acceleration during this time?
initial velocity (u)=0m/s
final velocity (v)=10m/s
time( t)=5s
acceleration (a)=v-u÷t
acceleration (a)=10-0÷5
acceleration (a)=10÷5
acceleration (a)=2
therefore acceleration (a)=2m/s
Cynthia and Marsha are standing still on top of a hill of the same height. Cynthia is a mass of 50 kg, and Marsha is a mass of 70 kg. Who has more potential energy?
A) Cynthia
B) Marsha
C) They both have the same potential energy
D) The both have no potential energy
Answer:
C) They both have the same potential energy
Explanation:
Marsha does more work than Cynita, but they have the same power rating.
facts about earths rotation
Answer:
♡ hi fairy ♡
-- The Earth's rotation is gradually slowing.
The Earth was once believed to be the centre of the universe.
Earth has a powerful magnetic field.
There is only one natural satellite of the planet Earth.
Earth is the only planet not named after a god.
The Earth is the densest planet in the Solar System.
~ madeline
✧･ﾟ: *✧･ *:･ﾟ✧* ✧･ﾟ: *✧･ *:･ﾟ✧* ✧･ﾟ: *✧･ *:･ﾟ✧*
Explanation:
Answer:
it take 24 hours to rotate fully
Explanation:
