Answers
Answer:its E
Explanation:
Related Questions
a girl runs once around a circular track with a radius of 100m at speed of 10m/s.
calculate her displacement
Answers
Answer:
0 m
Explanation:
Displacement is the shortest distance from one ppont to another. Here, the girl returns to the same spot after running. Hence, displacement is 0 m.
During a ______ Moon phase, the side of the Moon facing Earth isn't reflecting any sunlight from the Sun.
A: Full
B: New
Answers
Answer:
B) New
During a new Moon phase, the side of the Moon facing Earth isn't reflecting any sunlight from the Sun.
You push a 24.7 kg toy wagon at a speed of 9.7. What is the momentum of the wagon?
Answers
Answer:
Momentum = 239.59 kg·m/s
Explanation:
Mass x Velocity = Momentum
150 J of work is done on a closed system, and 270 J of heat is added to the system. Does the internal energy of the system increase, decrease, or stay the same? If the internal energy changes, state the change in energy.
Answers
The change in the internal energy of the system will increase.
The given parameters;
work on the system, w = 150 Jheat added to the system, Q = 270 JThe change in the internal energy of the system is calculated by applying first law of thermodynamics as follows;
ΔU = Q + w
where;
ΔU is the change in the internal energyΔU = 150 J + 270 J
ΔU = 420 J
Thus, the change in the internal energy of the system increases.
Learn more here:https://brainly.com/question/16148588
what are the characteristics of a " team " in hit in volleyball ?
Answers
Answer:
A team may contact the ball a total of three (3) times before it is sent over the net.
if the magntidude of the sum and difference of two non zero vectors A and B is equal. what can we say about the two vectors
Answers
Answer:
A + B = B - A
The above equation must hold for the sum and difference to be zero.
How can one of the vectors not be zero?????
what is faster?
A. train
B. bus
C. airplane
D. boat
Answers
Answer:
airplane
Explanation:
Answer:
a plane would go by far the fastest
Explanation:
it would be airplane ,train, boat, bus
If your neighbor leaves his house, walks 2 miles south, then turns around and walks home, what is his displacement?
Answers
Answer:
0
Explanation:
The neighbors displacement is 0 as displacement is how far the person is from their starting location. If they walk 2 miles away and then head back those 2 miles back to their house; 2-2=0
This means that it is where he started vs. where he ended up, it doesn’t matter the steps in between!!
¿Cuál es la densidad de un metal si una muestra tiene una masa de 63.5 g cuando se mide en el aire y una masa aparente de 55.4 g cuando está sumergida en agua?. Considere la densidad del agua como 1000 kg/m3.
Answers
La densidad del metal como se requiere en la pregunta es 7.8 * 10 ^ 3 Kg / m ^ 3.
Sabemos que ese empuje hacia arriba = peso en aire - peso en líquido
Peso en el aire = 63,5 * 10 ^ -3 Kg * 10 m / s ^ 2 = 0,635 N
Peso en líquido = 55,4 * 10 ^ -3 Kg * 10m / s ^ 2 = 0,554 N
Empuje hacia arriba = 0,635 N - 0,554 N = 0,081 N
Pero ;
Empuje hacia arriba = Volumen * densidad del fluido * aceleración debido a la gratitud
volumen = empuje hacia arriba / densidad del fluido * aceleración debido a la gratitud
volumen = 0.081 N / 1000 * 10
Volumen = 8.1 * 10 ^ -6 m ^ 3
Densidad = masa / volumen
Densidad = 63,5 * 10 ^ -3 Kg / 8,1 * 10 ^ -6 m ^ 3
= 7,8 * 10 ^ 3 kg / m ^ 3
Más información: https://brainly.com/question/12108425
31. TRUE or FALSE A cheese puff must contain C since CO2 was produced when it was burned,
I
Answers
Answer:
True
Explanation:
A 2kg body is moving a long a horizontal circular path of radius 2m with constant speed of 6m/s . what is the magnitude of the force acting on the body ?
Answers
echo is experienced more in a newly constructed room than in a furnished room why??
Answers
Answer:
in a furnished room the furniture scatter the sound waves and it doesn't reach our ears in the same manner it left our mouth.
A) infrared energy
B) microwave energy
C) radio wave energy
Answers
Answer:
Infrared energy
Explanation:
Answer:
A) infrared energy
Explanation:
The first hill of a roller coaster is 42.0 meters high. The bottom of the first hill is 4.2 meters off the ground.The roller coaster cart has a mass of 4500 kg.
Calculate its potential energy at the top of the first hill.
Calculate its potential energy at the bottom of the first hill.
Challenge- What is the velocity of the cart at the bottom of the first hill?
Answers
Answer:
1.89*10⁶J
Explanation:
because 4500kg * 42m*10m/s² is 1890000J
Does a 2-kilogram rock have twice the mass
of a 1-kilogram rock?
Answers
Yes.
Because the mass would be measured in kilograms ( given units) 2 is two times greater than 1, so it would have twice the mass
Answer:
yes the 2 kg rock would be twice the size as a 1 kg rock
Which wave has the longest wavelength?
Answers
Answer:
A
Explanation:
8) If a dog is running at 25 feet per second, how far will he travel after I minute of running? Efe runs for 30 minutes at a speed of 40 miles per hour, how far will run? 10) Turbo the Snail moves across the ground at a pace of 12 feet per day If the garden is 48 feet away, how many days will it take for the snail to get there?
Answers
Efe will run 20 miles in 30 minutes
Turbo will take 4 days to get there
is there any difference in upthrust of water at b and c
Answers
Answer:
no picture attached
Explanation:
How fast should a girl of 35 kg run so that her kinetic energy becomes 700J
of?
Answers
V = square root of 40
v = 6.324 m/s
Answer:
√40m/sec
Explanation:
As we know Kinetic energy = 1/2 mv^2
700 = 1/2 x 35 x v^2
1400/35 = v^2
√40 = v
So v, √40m/sec
Hope this helps you.
Agatha the snake is 50 centimeters long.3 years from now she will be 152 centimeters long and fully grown. If Agatha grows at constant rate, how much does she grow in length each year
Answers
Answer: 34cm each year
Explanation:
can someone sent some gravity questions
Answers
Answer:
can gravity from waves
Explanation:
yes gravity can froms way
A catamaran with a mass of 5.44×10^3 kg is moving at 12 knots. How much work is required to increase the speed to 16 knots? (One knot = 0.51 m/s.)
show all steps
Answers
The work that is required to increase the speed to 16 knots is 14,176.47 Joules
If a catamaran with a mass of 5.44×10^3 kg is moving at 12 knots, hence;
5.44×10^3 kg = 12 knots
For an increased speed to 16knots, we will have:
x = 16knots
Divide both expressions
[tex]\frac{5.44 \times 10^3}{x} = \frac{12}{16}\\12x = 16 \times 5.44 \times 10^3\\x = 7.23\times 10^3kg\\[/tex]
To get the required work done, we will divide the mass by the speed of one knot to have:
[tex]w=\frac{7230}{0.51}\\w= 14,176.47Joules[/tex]
Hence the work that is required to increase the speed to 16 knots is 14,176.47 Joules
Learn more here: https://brainly.com/question/25573786
A 800N mountain climber scales a 140m cliff. How much work is done by the mountain climber?
Answers
Answer:
112 [kJ]
Explanation:
1) related formula is: A=F*S, where A - required work [J], F - force [N], S - distance [m].
2) according to the formula above: A=140*800=112000[J]=112 [kJ]
Answer:
112000 J
Explanation:
800N x 140m
Emma travels at a speed of 23 miles per hour for 3.5 hours. How far has she travelled?
Answers
Answer: 80.5 miles
Explanation:
3.5 x 23 = 80.5
What is unusual (compared to other planets) about how water is found on earth
Answers
Answer:
It is unique among planets in our solar system for having water in its liquid form at the surface, in an amount conducive to life evolving. ... No one knows why Earth has the exact amount of water it does, which is relatively small considering that water molecules outnumber silicate molecules in the galaxy, he said. so no one actually found out who actually put water on the earth and why
Explanation:
Answer:
It is the only planet in our solar system that has water in its liquid state at the surface in sufficient quantities to support the evolution of life. Despite the fact that water molecules outnumber silicate molecules in the galaxy, no one understands why Earth has the precise quantity of water it has, which is a minuscule amount when compared to the rest of the galaxy.
Explanation:
Hope it helps:)
What happens in a nucleus during beta decay
The numbers of protons increases
The number of neutrons increases
The number of protons decrease
The number of protons plus the number of neutrons decreases
Answers
The number of protons plus the number of neutrons decreases
Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. In beta minus decay, a neutron decays into a proton, an electron, and an antineutrino: n Æ p + e - +.
How to find density of a gas.
Answers
Answer:
Subtract the mass of the cylinder from the mass of the cylinder when it contains gasoline. This is the mass of the gasoline. Divide this figure by the volume, 100 ml, to get the density.
How to use bernoulli's equation.
Answers
Answer:
Answer is below ….
Explanation:
The Bernoulli equation is a crucial statement that connects a fluid's pressure, height, and velocity at a single point in its flow. In an idealised system, the connection between these fluid conditions along a streamline always equals the same constant along that streamline.
Water from a reservoir runs through enormous tubes called penstocks before reaching a turbine at the end of a hydroelectric dam. The gravitational potential energy drops as the water flows down the pipe according to Bernoulli's equation, yet in many configurations, the water departs at the same speed.
Bernoulli's equation is a more broad and mathematical version of Bernoulli's principle that includes variations in gravitational potential energy. We'll derive this equation in the following part, but first, let's look at Bernoulli's equation to get a sense of what it says and how one may use it.
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(hope this helps can I pls have brainlist (crown)☺️)
A ruined in a race decides to accelerate right up to the moment he crosses the line He is the initially travelling at 5m/s and accelerates at 0.4m/s² for 5 sec. find
a) the distance he covers
b) his final velocity
Answers
Answer:
S = V t + 1/2 a t^2 = 5 m/s * 5 s + .2 m/s^2 * 25 s^2 =
25 m + 5 m = 30 m distance traveled
Vf = V + a t = 5 m/s + .4 m/s^2 * 5 s = (5 + 2) m/s = 7 m/s final velocity
Why are saturn's rings so noticeable?.
Answers
Answer:
Why are Saturn's rings so noticeable? They are made of lots of fresh, bright icy particles from a recent breakup.
Explanation: