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
LekaFEV [45]
4 years ago
8

A hill that has a 28.1% grade is one that rises 28.1 m vertically for every 100.0 ml of distance in the horizontal direction. At

what angle is such a hill inclined above the horizontal?
Physics
1 answer:
Serhud [2]4 years ago
6 0

Answer:

\theta=15.70^\circ

Explanation:

A right triangle is formed, in which the vertical elevation is the opposite cathetus and the horizontal distance is the adjacent cathetus, since we know these two values, we can calculate the angle of inclination using the definition of tangent:

tan\theta=\frac{opp}{adj}\\\theta=arctan(\frac{opp}{adj})\\\theta=arctan(\frac{28.1m}{100m})\\\theta=15.70^\circ

You might be interested in
All changes
Nadusha1986 [10]
Bohr assumed the electrons moved in fixed orbits is the answer
7 0
3 years ago
A thin wire of length (2 m) and (1 mm2 ) cross-section area is clamped horizontally between two walls, a weight of (10 kg) is hu
allsm [11]

Answer:

Young modulus  = 9.8 × 10⁹ N/m²

Explanation:

From the information given:

Stress = F/A

Stress = (10 × 9.8) / 0.001²

Stress = 9.8× 10⁷ N/m²

Strain = increase in length / initial length of wire

Strain = 0.02/ 2

Strain = 0.01

Now;

The Young modulus (Y)= stress/strain

Young modulus  = (9.8 × 10⁷ N/m²) /  0.01

Young modulus  = 9.8 × 10⁹ N/m²

4 0
3 years ago
A bike travels at a constant speed for 4.00 m/s for 5.00 seconds. How far does it go
Umnica [9.8K]

Answer:

20 m

Explanation:

4.00 m/s x 5 seconds

4 m/s x 5 s = 20m

7 0
4 years ago
Read 2 more answers
A projectile is launched directly upward from the surface of the earth with an initial speed of 8. 8 km/s. Assuming air resistan
ale4655 [162]

Answer:

78m

Explanation:

4 0
2 years ago
How were the fossil symbols and mountain belts helpful in deciding where to move the continents
devlian [24]
Hey there! 

The fossil symbols and mountain belts provided clues as to where and how the continents were connected together before they had moved. The mountain belts showed scientists the direction those plates moved and the fossils indicated that similar dinosaurs or animals lived together in the same area.

Thank you! 
6 0
3 years ago
Other questions:
  • Look at the circuit diagram. Which of these components is part of the circuit
    15·2 answers
  • A large cube has a mass of 25kg. It is being acclerated
    7·1 answer
  • Which ball has the greater acceleration at the instant of release?
    5·1 answer
  • What would decrease the resistance of wires carrying an electric current
    5·2 answers
  • what is the position of the earth in which direction is the axis tilted when it is summer in the northern hemisphere and the sou
    9·1 answer
  • A parallel-plate capacitor is constructed from two aluminum foils of 1 square centimeter area each placedon both sides of a rubb
    6·1 answer
  •  A ballet dancer has a maximum net torque of 45 Nm, and the moment of inertia of his body is 30 kg mA2. if he starts twirling fr
    15·1 answer
  • An atom of an element is electrically neutral because the
    12·2 answers
  • PLEASE ANSWER. I WILL MAKE YOU THE BEST ANSWER BRAINLIEST. I PROMISE.
    6·1 answer
  • What were Rosalind Franklin, James Watson, and Francis Crick’s discovery, and what did it lead to? In three to five sentences, e
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!