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
Lorico [155]
3 years ago
9

Can anyone please answer both of these questions?

Physics
1 answer:
Anestetic [448]3 years ago
6 0
A. YES. As speed is a scalar quantity, direction of movement doesn’t affect it.

B. Because the friction force due to air acting on the upper part of body of the person who is traveling on the roof of the running bus try to turn over which is dangerous for passengers while the lower portion remain at rest.
You might be interested in
A triangle can have at most how many right angle?
Anna [14]

Answer: 1 right angle

Explanation:

4 0
3 years ago
Read 2 more answers
5. What is the amplitude of the waves shown in the diagram below?
Nitella [24]

Answer:

0.54 m

Explanation:

Example below.

3 0
2 years ago
An aluminum wire having a cross-sectional area equal to 3.90 10-6 m2 carries a current of 6.00 A. The density of aluminum is 2.7
stich3 [128]

Answer:

Vd = 1.597 ×10⁻⁴ m/s

Explanation:

Given: A = 3.90×10⁻⁶ m², I = 6.00 A, ρ = 2.70 g/cm³

To find:

Drift Velocity Vd=?

Solution:

the formula is Vd = I/nqA         (n is the number of charge per unit volume)

n = No. of electron in a mole ( Avogadro's No.) / Volume

Volume = Molar mass / density   ( molar mass of Al =27 g)

V = 27 g / 2.70 g/cm³ = 10 cm³ = 1 × 10 ⁻⁵ m³

n= (6.02 × 10 ²³) / (1 × 10 ⁻⁵ m³)

n= 6.02 × 10 ²⁸

Now

Vd = (6A) / (  6.02 × 10 ²⁸ ×  1.6 × 10⁻¹⁹ C ×  3.9×10⁻⁶ m²)

Vd = 1.597 ×10⁻⁴ m/s

6 0
2 years ago
Which energy does a car travelling 30 m/ph as it slows have:
Paladinen [302]

Answer:

c) kinetic energy

Explanation:

6 0
2 years ago
Read 2 more answers
What happens to balloon filled with air when it goes very high attitude from surface of earth why​
vlada-n [284]

Answer:

The balloon will continue to expand and eventually burst.

Explanation:

Simply, the reason for this is because the density of the atmosphere decreases gradually as you increase in altitude closer to space. This means that the air on the outside of the balloon can't provide enough pressure over the surface of the balloon in order to counteract the gas on the inside of the balloon from expanding.

3 0
2 years ago
Other questions:
  • How fast is a cat that runs 50 meters in 10 seconds?
    7·2 answers
  • A laser emits a cylindrical beam of light 2.3 mm in diameter. The average power of the laser is 2.4 mW . The laser shines its li
    15·1 answer
  • Using a horizontal force of 200N,we intend to move a wooden cabinet across a floor at constant velocity.What is the friction for
    10·1 answer
  • The energy content of food is conventionally measured in Calories rather than joules. One Calorie in nutrition is equal to 4184
    11·1 answer
  • Suppose you pull two opposite sides of the loop away from each other, such that the other two sides get closer, reducing the loo
    15·1 answer
  • What factor from the choices below determines whether
    15·1 answer
  • Which of the following choices is not an example of climate?
    14·1 answer
  • The first charged object is exerting a force on the second charged object. Is the second charged object necessarily exerting a f
    15·1 answer
  • In which of the following do two smaller atoms fuse to form a larger atom?
    13·1 answer
  • A car originally at rest reaches 40m/s after accelerating for 50s. Calculate its acceleration
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!