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
Dafna11 [192]
3 years ago
7

I need help with two more Physics problems​

Physics
2 answers:
sesenic [268]3 years ago
8 0

Answer:

c. They hit at the same time

b. BGS

Explanation:

A marble dropped (initial vertical velocity is 0) will land at the same time as a marble launched horizontally (initial vertical velocity is 0) from the same height.

Boat S has a net speed of 5 m/s (10 − 5).

Boat B has a net speed of 15 m/s (10 + 5).

Boat G has a net speed of ≈11.2 m/s (√(10² + 5²)).

Aliun [14]3 years ago
3 0

Answer:

For the first question the answer is they hit the ground at the same time.

Explanation:

You might be interested in
Suppose there are 10,000 civilizations in the Milky Way Galaxy. If the civilizations were randomly distributed throughout the di
vekshin1

Here is the full question

Suppose there are 10,000 civilizations in the Milky Way Galaxy. If the civilizations were randomly distributed throughout the disk of the galaxy, about how far (on average) would it be to the nearest civilization?

(Hint: Start by finding the area of the Milky Way's disk, assuming that it is circular and 100,000 light-years in diameter. Then find the average area per civilization, and use the distance across this area to estimate the distance between civilizations.)

Answer:

1000 light-years (ly)

Explanation:

If we go by the hint; The area of the disk can be expressed as:

A = \pi (\frac{D}{2})^2

where D = 100, 000 ly

Let's divide the Area by the number of civilization; if we do that ; we will be able to get 'n' disk that is randomly distributed; so ;

d= \frac{A}{N} =\frac{\pi (\frac{D}{2})^2 }{10, 000}

The distance between each disk is further calculated by finding the radius of the density which is shown as follows:

d = \pi r^2 e

r^2_e= \frac{d}{\pi}

r_e = \sqrt{\frac{d}{\pi} }

replacing d = \frac{\pi (\frac{D}{2})^2 }{10, 000} in the equation above; we have:

r_e = \sqrt{\frac{\frac{\pi (\frac{D}{2})^2 }{10, 000}}{\pi} }

r_e = \sqrt{\frac{(\frac{D}{2})^2 }{10, 000}}

r_e = \sqrt{\frac{(\frac{100,000}{2})^2 }{10, 000}}

r_e = 500 ly

The distance (s) between each civilization = 2(r_e)

= 2 (500 ly)

= 1000 light-years (ly)

4 0
3 years ago
Light striking a mirror at a 50° angle will be reflected at an angle _____.
Stells [14]
Equal to 50


law of reflection: angle of incidence equals angle of reflection
5 0
3 years ago
Read 2 more answers
How many protons would the element with the atomic number 10 contain?
galben [10]
The atomic number is the same as the proton number so the answer would be D) 10
3 0
3 years ago
What description best describes both mirrors and lenses?
Kipish [7]
The only reasonable choice from this list is choice-A.
8 0
3 years ago
Read 2 more answers
9. A soft drink distibutor drove west 11 km from Minnehaha to Nut Plains. She then turned around and drove back east for 209 km
guajiro [1.7K]

Answer:

220km

Explanation:

Given parameters:

Distance traveled from Minnehaha to Nut Plains  = 11km

Distance traveled to Dover  = 209km

Unknown:

The distance the soft drink distributor traveled  = ?

Solution:

To solve this problem, we  must understand that distance is the total length of path covered in a journey.

 So;

     Distance  = 209km + 11km  = 220km

The soft drink distributor covered 220km

3 0
2 years ago
Other questions:
  • A projectile is launched at some angle to the horizontal with some initial speed vi, and air resistance is negligible.(a) Is the
    9·1 answer
  • How do you communicate better
    9·1 answer
  • On land, coal is transported primarily by train. A typical large coal train may be about 1.5 km long and may consist of 120 cars
    11·1 answer
  • A runner has a speed of 5m/s and a mass of 130 kg what is his kinetic energy?
    13·2 answers
  • Suppose the Earth's magnetic field at the equator has magnitude 0.50×10−4T and a northerly direction at all points. Part A Estim
    12·1 answer
  • You are trying to tune the fifth string on your guitar, which is supposed to sound the A2 note (i.e., a note two octaves below A
    10·1 answer
  • Question 15 of 15
    9·1 answer
  • Water stored in a reservoir is used to generate electricity as it flows down and into a river. The river flows to the ocean, whe
    5·1 answer
  • The tau neutrino, the muon neutrino, and the electron neutrino are all.
    12·1 answer
  • Two resistors are connected in parallel two equivalent resistance is 3,75 ohm if one resistor has a resistance of 10ohm what is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!