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
tia_tia [17]
4 years ago
15

two boys started runing stright to ward each other from two pionts 100m aparts.one run at speed of 4m/s and other at 6m/s.how fa

r are they from the slower one's starting point when they meet​
Physics
1 answer:
kodGreya [7K]4 years ago
6 0

Answer:

One boys rate is "r" and the other's is (r+10)

the distance they cover is 240 miles in 3 hours

3r + 3*(r+10) = 240

6r + 30 = 240

6r = 210

r = 35 mph and the faster car is

r + 10 = 45 mph

You might be interested in
The net work done on a system moving to a stop, in magnitude, is equal:
Xelga [282]
I think answer should be d. Please give me brainlest I hope this helps let me know if it’s correct or not okay thanks I appreciate it
8 0
3 years ago
A 4.3-g object moving to the right at 22 cm/s makes an elastic head-on collision with a 8.6-g object that is initially at rest.
3241004551 [841]
The right<span> at +20.0 </span>cm/s makes<span> an </span>elastic head<span>-on </span>collision<span> with a 10.0 </span>g object<span> that </span>makes<span> an</span>elastic head<span>-on </span>collision<span> with a 10.0 </span>g object<span> that is </span>initially<span> at </span>rest<span>.(b) Find the fraction of the </span>initial<span>kinetic energy transferred to the 10.0 </span>g object<span>.of small </span>mass<span> before and </span>after collision; V=velocity<span> of big </span>mass after collision<span>.</span>
7 0
3 years ago
State the principle of quantization of charge​
Svetach [21]

Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge

8 0
3 years ago
Read 2 more answers
A Pitot-static probe is used to measure the speed of an aircraft flying at 3000 m. If the differential pressure reading is 3300
adell [148]

Answer:

   v = 306.76 Km/h

Explanation:

given,

height of the aircraft = 3000 m

differential pressure reading = 3300 N/m²

density of air = 0.909 Kg/m³

speed of aircraft = ?

Assuming the air flowing above air craft is in-compressible, irrotational and steady so, we can use Bernoulli's equation to solve the problem.

using Bernoulli's equation

          \dfrac{v^2}{2} = \dfrac{\Delta P}{\rho}

where ρ is the density of the air at 3000 m

          v= \sqrt{\dfrac{2 \times \Delta P}{\rho}}

          v= \sqrt{\dfrac{2 \times 3300}{0.909}}

          v = \sqrt{7260.726}

                 v = 85.21 m/s

          v= 85.21 \times \dfrac{3600}{1000}

                 v = 306.76 Km/h

4 0
3 years ago
Light travels 186,282 miles in one second. A light year is the distance light travels in one year. It is about 4.3 light years t
deff fn [24]

Answer:

2.5278035226\times 10^{13}\ miles

1994.7944465 miles

46390568.5227 miles

125 ft

Explanation:

1\ ly=186282\times 365.25\times 24\times 60\times 60=5.8786128432\times 10^{12}\ mi

4.3\ ly=4.3\times 5.8786128432\times 10^{12}=2.5278035226\times 10^{13}\ miles

The distance is 2.5278035226\times 10^{13}\ miles

2000\ miles=0.01\ in

2.5278035226\times 10^{13}\times \dfrac{1}{2000}=1.2639017613\times 10^{10}\ LA\ to\ NY

Converting to inches

1.2639017613\times 10^{10}\times 0.01=126390176.13\ in/LA\ to\ NY

Converting to miles

126390176.13\times\dfrac{1}{5280\times 12}=1994.7944465\ inches/LA\ to\ NY

The distance is 1994.7944465 miles

5.8786128432\times 10^{17}\times \dfrac{1}{2000}\times 0.01\times\dfrac{1}{5280\times 12}=46390568.5227\ miles

The distance is 46390568.5227 miles

5.8786128432\times 10^{12}\times 15\times 10^{9}=8.8179192648\times 10^{22}

8.8179192648\times 10^{22}\times \dfrac{1}{5.8786128432\times 10^{17}}=150000\ MW\ dia

150000\dfrac{1}{100\times 12}=125\ ft

The distance is 125 ft

5 0
4 years ago
Other questions:
  • A book that has a mass of 0.5 grams is pushed across a table with a force of 20 newtons what is the acceleration of the book? A.
    9·2 answers
  • a teacher pushed a 10kg desk across a floor for a distance of 5m. she exerted a horizontal force of 20n. how much work was done?
    6·1 answer
  • Based on the information in the graph which isotope is the most stable and would therefore not release energy by either fusion o
    9·1 answer
  • What is the shape of popcorn
    10·1 answer
  • The shape of a planet's orbit is influenced by gravity.
    10·2 answers
  • Please help me i need some help!!!
    7·1 answer
  • How does inertia affect a person who is not wearing a seatbelt during a collision?
    5·1 answer
  • An ideal parallel-plate capacitor consists of a set of two parallel plates of area AAA separated by a very small distance ddd. W
    6·2 answers
  • A 90.0-kg man runs at a constant speed of 11.5 m/s. what is his kinetic energy?
    12·1 answer
  • An electron traveling at a velocity v enters a uniform magnetic field B. Initially, the velocity and field are perpendicular to
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!