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
kipiarov [429]
2 years ago
8

Hai ô tô khởi hành cùng lúc từ A,B cách nhau 20 km chuyển động theo hướng từ A đến B vs vận tốc lần lượt là 60km/h và 40km/h

Physics
1 answer:
sdas [7]2 years ago
6 0

Answer:

áp dụng công thức v = s/t

s là dộ dài qduong

v là vận tốc

t là thời gian

xuyên suốt 2 câu hỏi đều dùng công thức này

Explanation:

You might be interested in
Which one doesn't belong in the group? oxygen, sulfur, selenium,
vlada-n [284]
It’s gonna be Oxygen ....
3 0
2 years ago
Water that flows from behind a large dam can cause machines to produce electricity. What change takes place?
lyudmila [28]
The mechanical energy in the falling water is used to spin the generator, and gets transformed into electrical energy.  That's the first choice on the list.
8 0
3 years ago
how do you find work when only given the angle a sled is pulled, the mass, the coefficent of kinetic friction and distance
Sergio039 [100]

Answer:

W = F * s    

Work done equals applied force * distance traveled

Apparent weight = M g (1 - sin θ)     since some of applied force will lighten sled

μ = coefficient of kinetic friction

F cos θ = force applied to motion of sled

s = distance traveled

[μ M g (1 - sin θ)] cos θ * s = work done in moving sled

Note that F = μ M g    if applied force is in the horizontal direction

8 0
2 years ago
A satellite of mass m orbits a moon of mass M in uniform circular motion with a constant tangential speed of v. The gravitationa
lukranit [14]

Answer:

Two stars, each of mass M, form a binary system. ... used is the distance between the centers of the planets; here that distance is 2R. ... r appears in the denominator of Newton's law of gravitation, the force of ... The orbital speed of a satellite orbiting the earth in a circular orbit at the ... is undergoing uniform circular motion?

Explanation:

Two stars, each of mass M, form a binary system. ... used is the distance between the centers of the planets; here that distance is 2R. ... r appears in the denominator of Newton's law of gravitation, the force of ... The orbital speed of a satellite orbiting the earth in a circular orbit at the ... is undergoing uniform circular motion?

3 0
2 years ago
How much pressure is applied to the ground
statuscvo [17]

Answer:

Pressure applied by the man= 285103.125 Pa  or 41.35 lb/in^{2}

Explanation:

Pressure is defined as the perpendicular force applied per unit area.

i.e.  Pressure=\frac{Force}{Area}

Now, Force= mg

where, m = mass of the body(man) = 93 kg

g = acceleration due to gravity of Earth = 9.81 m/{s^{2}}

Area covered is equal to the area of both stilts(a man generally stands on two feet)

therefore Area=2(0.04)^{2} m^{2}

and putting in the values, we get,

Pressure=\frac{93\times9.81}{2\times(0.04)^{2}}Nm^{-2}=285103.125Nm^{-2}

Now we need to convert to our required units:

1Nm^{-2}=1Pa\\1Pa=0.000145038lb/in^{2}

(We can get the above result by individually converting kg to lb and meters to inches respectively)

Using the above relations we get,

Pressure=285103.125Pa=0.000145038\times285103.125lb/in^{2}=41.35lb/in^{2}

7 0
3 years ago
Other questions:
  • how much energy is required to turn 20 gram cube of ice at a temperature of -10 degrees Celsius into liquid water at a temperatu
    10·1 answer
  • A book weighing 12 n is placed on a table. how much support force does a table exert on the book?
    14·1 answer
  • A box is sliding up an incline that makes an angle of 14.0° with respect to the horizontal. the coefficient of kinetic friction
    9·1 answer
  • The case whereby sound waves are heard at either a higher or lower pitch due to an object's motion is called:
    14·2 answers
  • The wave y1 = 0.12 sin π/3(5x+200t-1) propagates on a string of linear density 0.02 kg/m.
    7·1 answer
  • A positive charge Q1 = 34 nC is located at the origin. A negative charge Q2 = -5.5 nC is located on the positive x-axis p = 15 c
    14·1 answer
  • A major motor company displays a die-cast model of its first automobile, made from 6.66 kg of iron. To celebrate its one-hundred
    14·1 answer
  • Describe transmission
    11·1 answer
  • A spherical shell has an outside radius of 2.60 cm and an inside radius of a. The shell wall has uniform thickness and is made o
    13·1 answer
  • 2. If a tricycle has a kinetic energy of 360 J and a mass of 4 kg, what is its velocity?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!