1answer.
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
laila [671]
3 years ago
12

A skier has an acceleration of 2.5 m/s2. How long does it take her to come to a complete stop from a speed of 18 m/s? A. 3.4 s B

. 7.2 s C. 15.5 s D. 0.14 s
Physics
1 answer:
noname [10]3 years ago
6 0
The question is defective. If her acceleration is 2.5 m/s/s, then her speed is 2.5 m FASTER each second, and she will never stop.
You might be interested in
Energy stored in the nucleus of an atom is called
tensa zangetsu [6.8K]
Nuclear energy because it holds atoms together.
6 0
3 years ago
Read 2 more answers
Three liters (3000 cm3) of oil is spilled onto a smooth lake. If the oil spreads out uniformly until it makes a circular oil sli
SVETLANKA909090 [29]

Answer:

4.38 km

Explanation:

Volume of oil slick, V = Area of oil slick, A × thickness of 1 molecule, d'

Since the oil slick spreads out in a circular area, it has the area of a circle.

So, V = πd²/4 × d'

d² = 4V/πd'

d = 2√(V/πd') where d = diameter of oil slick.

Since V = 3000 cm³ = 3000 × 10⁻⁶ m³ = 3 × 10⁻³ m³ and d' = 2 × 10⁻¹⁰ m

So, d = 2√(3 × 10⁻³ m³/(π × 2 × 10⁻¹⁰ m))

= 2√(3 × 10⁻³ m³/(6.283 × 10⁻¹⁰ m))

= 2√(0.477 × 10⁷ m²) = 2√(4.775 × 10⁶ m²)

=  2 × 2.19 × 10³ m

= 4.38 × 10³ m

= 4.38 km

4 0
3 years ago
Is the force of gravity stronger on a piece of crumpled paper or a normal piece of flat paper?
GaryK [48]
Yes, because a crumpled piece of paper has more center mass, allowing it to fall faster.
3 0
3 years ago
The rectangular plates in a parallel-plate capacitor are 0.063 m × 5.4 m. A distance of 3.5 × 10–5 m separates the plates. The p
djverab [1.8K]

Answer:

capacitance of the capacitor = 0.18 μ  F

Explanation:

Area of the plate A = 0.063 m x 5.4 m = 0.3402 m²

distance between the plate d = 3.5 × 10–5 m

dielectric value for Teflon K = 2.1

capacitance of capacitor = ?

Formula for capacitance of parallel plate is as follows ,

C= \frac{K\epsilon_0 A}{d} (Where \epsilon_0 = 8.82 \times 10^-12\ \frac{F}{m} )

putting the values in the equation,

C = \frac{2.1\times8.82\times10^-12\times0.3402 }{3.5\times10^-5} =0.18\times 10^-6 =0.18 μ  F

4 0
3 years ago
a conical pendulum is formed by attaching a 50g mass to a 1.2m string. The mass swings around the circle of radius 25cm (a) calc
kipiarov [429]
A. 0.5 miles an hour 
B. 0.2 miles an hour
4 0
3 years ago
Other questions:
  • What three forms of kinetic energy can a polyatomic molecule have?
    10·1 answer
  • What does the force of gravity on an object depend on?
    13·2 answers
  • 3. A ball is thrown up vertically, with a velocity of 20m/s. Calculate the maximum height
    7·1 answer
  • 1 what were the two classifications of motion, according to aristotle? a 2 according to aristotle, what kinds of motion required
    9·1 answer
  • 4.Explain what must be true of component waves for reinforcement or interference to occur.
    9·1 answer
  • A 0.454-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 21.0 N/m. The
    10·1 answer
  • What type of circuit is illustrated PLEASE HELPPP
    10·2 answers
  • What is chronology?
    13·2 answers
  • Please help i will mark brainliest
    10·2 answers
  • 3.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!