Answer:
ok i don't know the answer but I send you tomorrow
1. As you get ready for bed, you roll up one of your socks into a tight ball and toss it into the laundry
basket across the room. Then, you try to toss the other sock without rolling it up.. What effects whether
or not your socks land in the basket?
Answer:
When you toss a rolled up sock across the room, it travels faster as it becomes round and has more weight added on it and this causes the sock to travel in the direction you wish and this gives you a high chance of the sock going straight into the laundry basket, no matter how far away you are.
On the other hand, throwing a sock without rolling it up will cause the sock to just flat down as you throw it. It will travel at a low speed because it has no weight on it since it is flat, and if you try to throw it, it will atleast land 21 cm away from you. About a 0% chance of it getting in the basket.
Hope this helped! =>
-7 and a number 12 units to the rights of -7
Answer:
5
Explanation:
Move 12 spots to the right from -7 on the number line.
The box is pulled horizontally across the floor by a force of 100 N and opposed by a frictional force of 60 N. The object accelerates at 4 m/s2 .
Answer:
10 kg
Explanation:
first find resultant force by subtracting the forces mass is force ÷ acceleration10 turns of wire are closely wound around a pencil as shown in the figure. when measured using a scale as shown, the length of total turns is obtained 25mm. then a) What is the thickness of the wire? b) Express the thickness of the wire in centimetre.
please write correct answer
Answer:
a. The thickness of the wire is 2.5 mm.
b. The wire is 0.25 cm thick.
Explanation:
Number of turns of the wire = 10
The length of total turns = 25 mm
a. The thickness of the wire can be determined by;
thickness of the wire = [tex]\frac{length of total turns}{number of turns}[/tex]
= [tex]\frac{25}{10}[/tex]
= 2.5 mm
Therefore, the wire is 2.5 mm thick.
b. To determine the thickness of the wire in centimetre;
10 mm = 1 cm
So that,
2.5 mm = x
x = [tex]\frac{2.5}{10}[/tex]
= 0.25 cm
The wire is 0.25 cm thick.
if a car, going 20 m/s with a mass of 1000kg hits a garbage can, what is the momentum of the can and the car afterwards?
Answer:
Momentum is the product of the mass and velocity of an object.
[tex]p = m \times v[/tex]
[tex]p = 1000kg \times 20 \frac{m}{s} = 20000kg \times \frac{m}{s} [/tex]
What do the flows of energy and matter through an ecosystem have in common?
Please help me answer this question !
Answer:
i believe it's the last one
Explanation:
because the first law of thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed.
good luck :)
i hope this helps
have a great day !!
What is the momentum of a tank with a mass of 3,500 kg and a velocity of 6 m/s?
Answer: 21000 kg*m/s
Explanation: Momentum is mass times velocity or p=mv where p represents momentum so...
3,500kg*6m/s= 21,000kg*m/s
How do you think the body deals with consuming a lot more
calories than are burnt?
Answer:
The body stores it as fat
Explanation:
Answer:
The body deals with consuming alot more calories than are burnt by gaining weight or holds it all up, while if you burn your calories, it'll lose weight :3
Explanation:
:3
PLS ANSWER FAST WILL GIVE BRAINLEST!!!!!!!!!
what is the relationship between speed and kinetic energy? (In other words, how are the two related to one another?) Explain.
Answer:
The kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Found it on the internet
Explanation:
Hope this helps dude
Explain with reason that when sunlight is focused on a piece of paper with the help of a convex len the paper will burn.
Answer:
Convex lenses concentrates the light energy to one spot on the paper so that the heat energy accumulates on that one small spot of paper. ... As the heat increases, combustion will occur when the spot becomes too hot and the paper will burn.
Explanation:
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If you know any of them, please help!!!!!!
I believe the answer for 1) is
PEgrav = mass • g • height
PEgrav = m *• g • h
Ultraviolet rays are more likely to give you a sunburn than visible light. What statement would be the best possible explanation for this?
Answer : Visible light cannot penetrate the skin. Ultraviolet rays have a higher frequency and therefore have more energy.
Explanation:
The electric field 1.22 m from
charge is 1570 N/C, pointing
toward the charge. What is the
charge? Include the sign of the
charge, + or -
(The answer is *10^-7 C. Just fill
in the number, not the power.)
(Unit = C)
Answer:
-2.6
Explanation:
it’s for Acellus
The charge with magnitude and sign is -2.6 x 10⁻⁷ C.
What is electric field?The field developed when a charge is moved. In this field, a charge experiences an electrostatic force of attraction or repulsion depending on the nature of charge.
Given, the electric field 1.22 m from charge is 1570 N/C, pointing
toward the charge.
The electric field and charge is related as
E = kq/r²
q = Er²/k
where k = 9 x 10⁹ N.m²/C²
Substitute the given values in the question, we have
q = 1570 x (1.22)² / 9 x 10⁹
q= 2.6 x 10⁻⁷ C.
Thus, the magnitude and sign of charge is -2.6 x 10⁻⁷ C.
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Which of Kepler's laws helps you compare the velocities of different planets?
see this and you
try to understand
Kepler's third law of planetary motion helps you compare the velocities of different planets.
What are Kepler's laws?The orbits of planets around the Sun are described by Kepler's laws of planetary motion, which he published between 1609 and 1619.
The laws replaced the circular orbits and epicycles of Nicolaus Copernicus' heliocentric theory with elliptical trajectories and provided an explanation for the variation in planetary velocities. As per the three laws:
A planet's orbit is an ellipse with one of its two foci being the Sun.A line segment connecting a planet and the Sun sweeps out the same amount of space over the same amount of time.A planet's semi-major axis length and orbital period are inversely related to one another.Hence, Kepler's third law of planetary motion helps you compare the velocities of different planets.
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Xander goes airborne on his scooter as he exits a half-pipe at Newton's Skate Park. Xander and his scooter have a total mass of 50 kg. The net force acting on Xander and the scooter is 25N. What is Xander's acceleration?
Hello,
QUESTION)According to the 2nd Newton's law,
✔ We have : F = m x a ⇔ a = F/m; with F in N, m in kg, a in m/s²
a = 25/50a =0.5 m/s²Therefore Xander's acceleration is 0.5 m/s².
The total mass of Xander and his scooter is 50 kg and the net force acted due to Xander and his scooter is 25 N then the acceleration will be 0.5 m/s².
What is Acceleration?Acceleration is the rate at which the speed and orientation of a moving object change over time. When a spot or object moves faster or slower along a straight line, it is said to be accelerated. Even though the speed is constant, motion on a circle accelerates so because the direction is always shifting. Both by and to acceleration for all other types of motion.
It is a vector quantity because it has both magnitude and direction.
As per the given information provided by the question,
Mass, m = 50 kg
Force, F = 25 N
F = ma
25 N = 50 × a
a = 25/50
a = 0.5 m/s².
Therefore, the acceleration of Xander's acceleration will be 0.5 m/s²
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what name given to the heat energy received from the sun
Answer:
solar energy
Explanation:
Please mark as the brainliest.
Answer:
The Name of the heat energy from the is called solar energy.
The momentum of an object is determined to be 7.2 x 10-3 cm kg x m/s. Express this as provided or use any equivalent unit. How is this expressed in value and units?
Complete Question:
The momentum of an object is determined to be 7.2 × 10-3 kg⋅m/s. Express this quantity as provided or use any equivalent unit. (Note: 1 kg = 1000 g).
Answer:
7.2 gm/s.
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
[tex] Momentum = mass * velocity [/tex]
Given the following data;
Momentum = 7.2 * 10^-3 kgm/s
1 kg = 1000 g
Substituting the unit in kilograms with grams, we have;
Momentum = 7.2 * 10^-3 * 1000 gm/s
Momentum = 7.2 gm/s.
Is there any alternative method to find the intensity of earthquake
Answer:
Hey mate....
Explanation:
This is ur answer.....
Another way to measure the strength of an earthquake is to use the Mercalli scale. Invented by Giuseppe Mercalli in 1902, this scale uses the observations of the people who experienced the earthquake to estimate its intensity.
Hope it helps you,
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1
1) If you wanted to save money on your electric bill, all of the following would help except:
OA
using light bulbs that produce more light and less heat
OB.
using a heater that converts more energy into work
O c. lowering the temperature in your hot water
OD. leaving the refrigerator open to increase air circulation
Reset
Next
Answer:
D
Explanation:
I don't know how to explain but D is just weirdly wrong to me.
physics!!! please help D:
Scientists classify stars by color: white, red, blue. The color of a star helps to tells us how
______ The star is.
Answer: Hot
Explanation: Scientist use the color of starts to determine how hot the surface temperature is.
A car of mass 800 kg goes round a corner of radius 65 m at a
speed of 10 m/s.
a) What size force is needed to achieve this?
b) Suggest how this force is likely to be obtained.
c) What force would be needed if the driver approached the
bend at twice the speed?
Answer:
a. Centrifugal force = 1230.77 Newton.
b. Centrifugal force = mv²/r
c. Centrifugal force = 4923.08 Newton.
Explanation:
Given the following data;
Mass = 800kg
Radius = 65m
Velocity = 10m/s
a. To find the force;
Centrifugal force = (800*10²)/65
Centrifugal force = (800*100)/65
Centrifugal force = 80000/65
Centrifugal force = 1230.77 Newton.
b. The force associated with the car is generally referred to as centrifugal force because it's the force required to keep the car in a curved or circular path. It can be calculated using the formula;
Centrifugal force = mv²/r
c. To find the force at twice the speed;
Velocity = 2 * 10 = 20m/s
Centrifugal force = (800*20²)/65
Centrifugal force = (800*400)/65
Centrifugal force = 320000/65
Centrifugal force = 4923.08 Newton.
a. To achieve a car of mass 800 kg goes round a corner of radius 65 m at a speed of 10 m/s , needed 1230.77 Newton centripetal forces.
b. When an object goes round a corner then centripetal forces keep that object moving in a curved path.
c. When speed is twice. then, 4923.07 Newton centripetal forces needed.
a. Given that car of mass 800 kg goes round a corner of radius 65 m at a
speed of 10 m/s.
Centripetal force ,[tex]F=\frac{mv^{2} }{r}[/tex]
Where m is mass, v is speed of object and r is radius.
Substituting all values in above equation.
[tex]F=\frac{800*10^{2} }{65} =1230.77Newton[/tex]
b. Centripetal force is defined as, the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation.
As a car makes a turn, the force of friction acting upon the turned wheels of the car provides centripetal force required for circular motion.
c. When speed is twice, then [tex]v=10*2=20m/s[/tex]
Centripetal force,[tex]F=\frac{800*20^{2} }{65} =4923.08Newton[/tex]
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Why are very high temperatures and pressures required for fusion to occur?
to generate the neutrons that are needed to break the nuclei
to overcome the repulsion between the protons in the nuclei that join
to maintain the proper conditions to keep the chain reaction going
to keep the uranium fuel separate from the control rods
Explanation:
to overcome the repulsion between the protons in the nuclei that join
Answer:
bBBBB
Explanation:
to overcome the repulsion between the protons in the nuclei that join
A yo-yo is twirled on a 4 meter long string so that its tangential
speed is 16 m/s. If the string is only 2 meter long and the revolutions per
second stay constant, what is the new tangential speed?
Answer:
8m/s
Explanation:
i think i had this question on a test i'm taking so i'm assuming i cannot say for sure if this is correct
An arrow is fired downward at an angle of 45 degrees from the top of a 200 m cliff with a velocity of 60.0 m/s.
A.how long will it take the arrow to hit the ground?
B.how far from the base
Answer:
A) 3.39 seconds
Explanation:
A) How long will it take the arrow to hit the ground?We can find the time it takes the arrow to hit the ground by using a constant acceleration equation.
Let's make the positive direction upwards and the negative direction downwards. Let's list out the relevant variables:
v₀ = -60 m/sΔy = -200 ma = -9.8 m/s² t = ?Find a constant acceleration equation that contains these four variables.
Δy = v₀t + 1/2at²Substitute known values into the formula and solve for t.
-200 = (-60 · cos(45))t + 1/2(-9.8)t² -200 = (-30√2)t - 4.9t² 0 = -4.9t² - (30√2)t + 200Use the quadratic formula to continue solving for t.
[tex]\displaystyle \frac{-b \pm \sqrt{b^2-4ac} }{2a}[/tex][tex]\displaystyle \frac{-(-30\sqrt{2})\pm \sqrt{(-30\sqrt{2})^2 -4(-4.9)(200)} }{2(-4.9)}[/tex] [tex]\displaystyle \frac{30\sqrt{2} \pm \sqrt{1800+3920} }{-9.8}[/tex][tex]\displaystyle \frac{30\sqrt{2} \pm \sqrt{5720} }{-9.8}[/tex]From this, when we add the discriminant we get -12.04664168. When we subtract the discriminant we get 3.38819129.
Since time cannot be negative, the time it takes for the arrow to hit the ground must be 3.39 seconds.
Answer:V^2=U^2+2gSIN45S
60^2=2asin45x200
3600=400sin45(a)
3600=282•84a
a=3600/282•84
a=12m/s^2
S=ut+0•5gt^2
200=0•5(12)t^2
200=6t^2
t^2=200/6
t^2=33.33
t=5.77s
Explanation:
Fission reactions are currently used to provide energy for many different sources. Where does the energy produced during the reaction come from?
Answer: From the mass lost during the reaction, or the mass defect.
The energy produced during a reaction come from the heat energy which is released during splitting of uranium atoms.
What is a fission?Nuclear energy originates from the splitting of uranium atoms in the atmosphere, a process called as fission. This reaction generates heat energy to produce steam, which is used by a turbine generator to generate electric energy. Because, the nuclear power plants do not burn fuel, they do not produce any greenhouse gas emissions.
Uranium and plutonium are the most commonly used atoms for fission reactions in nuclear power reactors because they are very easy to initiate and control with time. The energy which is released by fission in these reactor heats water into the steam. The steam generated is used to spin a turbine to produce carbon-free electric energy.
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A person can jump out of an airplane at 5000 feet, without a parachute, AND land on the ground safely (without any injury), IF they can manage to do what physics trick?
Lengthen the moment/time of impact
Bend knees right before impact
Spread out arms and legs to slow down
Shorten the length/time of impact
Answer:
Momentum is equal to mass for velocity (p1=mv)
But momentum is also equal to Force for time of impact (p1=Ft). Hence the impact force is inversely proportional to the fall time and directly proportional to the mass and fall velocity : F=mv/t^2 or F=p1/t
If he slows down, v diminishes and F diminishes
Hence correct Answer is C
AN AIR CRAFT HEADS NORTH AT 320KM/H RELATIVE TO THE WIND THE WIND VELOCITY IS 80KM/HFROMNORTH .FIND THE VELOCITY OF THE AIR RELATIVE TO THE GROUND
Answer:
Explanation:
See attached file for answer.
A football player kicked a ball at an angle of 37o above the horizontal with an initial velocity of 20 m/s, what is the maximum height reached by the ball? a. 62 m b. 26 m c. 7.4 m d. 5.1 m
Answer:
H = 8.45 m
Explanation:
Given that,
Angle of projection, [tex]\theta=37^{\circ}[/tex]
The initial velocity of the ball, u = 20 m/s
We need to find the maximum height reached by the ball. The formula for the maximum height is given by :
[tex]H=\dfrac{u^2\sin^2\theta}{2g}\\\\H=\dfrac{(20)^2\times \sin^2(37)}{2\times 9.8}\\\\H=8.45\ m[/tex]
So, the maximum height reached by the ball is 8.45 m.
A vocalist with a bass voice can sing as low as 92 Hz.
What is the wavelength of the sound waves?
Answer:
3.26 x 10 to the power of 6Explanation:
c = lambda × frequency