answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KonstantinChe
21 day ago
10

What is the acceleration of a skier that goes from 2.50 m/s to 14.5 m/s while traveling 505 m down a slope?

Physics
You might be interested in
A car traveling at 70 mph70 mph down the interstate collides with a bug trying to cross the highway. Which of the following stat
Sav [3153]
The force exerted by the car on the bug is identical to the force the bug applies back on the car.
5 0
2 months ago
A charged wire of negligible thickness has length 2L units and has a linear charge density λ. Consider the electric field E-vect
Softa [3030]

Answer:

E=2K\lambda d\dfrac{L }{d^2\sqrt{L^2+d^2}}

Explanation:

Consider the following:

Length= 2L

Linear charge density=λ

Distance= d

K=1/(4πε)

The electric field measured at point P

E=2K\int_{0}^{L}\dfrac{\lambda }{r^2}dx\ sin\theta

sin\theta =\dfrac{d}{\sqrt{d^2+x^2}}

r^2=d^2+x^2

Thus,

E=2K\lambda d\int_{0}^{L}\dfrac{dx }{(x^2+d^2)^{\frac{3}{2}}}

Now, by applying integration to the equation above

E=2K\lambda d\dfrac{L }{d^2\sqrt{L^2+d^2}}

4 0
3 months ago
A 1.00 l sample of a gas at 25.0◦c and 1.00 atm contains 50.0 % helium and 50.0 % neon by mass. what is the partial pressure of
inna [3103]
V = Volume of gas sample = 1.00 L = 0.001 m³T = temperature of gas = 25.0 °C = 25 + 273 = 298 K P = pressure = 1.00 atm = 101325 Pa n = number of moles of gas using ideal gas law:PV = n RT101325 (0.001) = n (8.314) (298)n = 0.041 n₁ = moles of heliumn₂ = moles of neonm₁ = mass of helium = n₁ (4) = 4 n₁m₂ = mass of neon = n₂ (20.2) = 20.2 n₂given that:m₁ = m₂4 n₁ = 20.2 n₂n₁ = 5.05 n₂also n₁ + n₂ = n5.05 n₂ + n₂ = 0.041n₂ = 0.0068mole fraction of neon is mole fraction = n₂ /n = 0.0068/0.041 = 0.166P₂ = partial pressure of neon =(mole fraction) P P₂ = (0.166) (1)P₂ = 0.166 atm
5 0
2 months ago
Read 2 more answers
A cat accelerates from rest to 10m/s when it sees a dog. This takes 2 seconds. What was the acceleration of the cat
serg [3582]
The acceleration is calculated using the formula a= change in velocity/time. Here, it becomes A=10-0/2, simplifying to A=10/2, resulting in A=5 m/s².
5 0
2 months ago
Read 2 more answers
Which of the following equations correctly expresses the relation between vectors A⃗ , B⃗ , C⃗ , and D⃗ shown in the figure?
Sav [3153]
C)  B ⃗ = A ⃗ + C ⃗  Pay attention to the direction of the arrows (vectors).
7 0
2 months ago
Read 2 more answers
Other questions:
  • If the position of an object is zero at one instant, what is true about the velocity of that object?
    7·1 answer
  • Which statements correctly describe forces? Check all that apply.
    10·2 answers
  • A projectile is launched from the ground with an initial velocity of 12ms at an angle of 30° above the horizontal. The projectil
    15·2 answers
  • If you stand next to a wall on a frictionless skateboard and push the wall with a force of 40n, how hard does the wall push on y
    14·1 answer
  • A dog of mass 10 kg sits on a skateboard of mass 2 kg that is initially traveling south at 2 m/s. The dog jumps off with a veloc
    9·1 answer
  • In a sinusoidally driven series RLC circuit, the inductive resistance is XL = 100 Ω, the capacitive reactance is XC = 200 Ω, and
    15·1 answer
  • When boating in shallow areas or seagrass beds, you see a mud trail in your wake where your boat has churned up the bottom. If y
    5·1 answer
  • Describe electrons.<br> Location:<br> Charge:<br> Mass
    13·2 answers
  • 3. A 75kg man sits at one end of a uniform seesaw pivoted at its center, and his 24kg son sits at the
    11·1 answer
  • A box of books with mass 58 kg rests on the level floor of the campus bookstore. The floor is freshly waxed and has negligible f
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!