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
nataly862011 [7]
3 years ago
5

suppose that a large cargo truck needs to cross a bridge. the truck is 30 m long and 3.2 m wide. the cargo exerts a force nof 54

,000 n. the bridge can only withstand 450 pa of pressure. is it safe for the truck to cross the bridge?
Physics
1 answer:
Tamiku [17]3 years ago
7 0
<span>No, because the truck applies more pressure than the bridge can support.</span>
You might be interested in
What is the mass of an object that requires a force of 30 N to accelerate at a rate of 5 m/sec2 ?
Anastaziya [24]
M=F/A
Which means 30 divided by 5 m/s is 6kg(mass)
8 0
3 years ago
A skier is skiing down a slope on the mountain.
uysha [10]

The mechanical energy isn't conserved. Some energy is lost to friction.

Option A.

<h3><u>Explanation:</u></h3>

The mechanical energy is defined as the energy of a body which it achieves by virtue of its position and velocity. The mechanical energy are of two types - potential energy and kinetic energy. The potential energy is the energy of the body which it achieves by means of its relative position and is directly proportional to the height of the body from its relative plane. Whereas the kinetic energy of the body is achieved by virtue of its velocity and is directly proportional to the square of velocity of the body.

As the mountaineer is skiing down the slope of a mountain, the potential energy of the person is gradually changing into his kinetic energy. Had it been in an ideal situation, the potential energy lost would have been just equal to the kinetic energy gained by the person. But there's friction which opposes the speed of the body and reduces the velocity. Thus the kinetic energy will be lost to some extent and the energy won't be conserved.

4 0
3 years ago
1. Calculate the average velocity of the following trip. You walk to Pershing Square 58
Gre4nikov [31]

Explanation:

Velocity = displacement / time

v = √((58 m)² + (135 m)²) / (12 min × 60 s/min)

v = 0.20 m/s

7 0
3 years ago
Light of wavelength 476.1 nm falls on two slits spaced 0.29 mm apart. What is the required distance from the slits to the screen
stich3 [128]

Answer:

The distance is D  =  2.6 \ m

Explanation:

From the question we are told that

    The wavelength of the light is  \lambda  =  476.1 \ nm  =  476.1 *10^{-9} \ m

      The  distance between the slit is  d =  0.29 \  mm  =  0.29 *10^{-3} \ m

       The  between the first and second dark fringes is  y =  4.2 \ mm  =  4.2 *10^{-3} \ m

Generally  fringe width is mathematically represented as

       y  =  \frac{\lambda * D }{d}

Where D is the distance of the slit to the screen

   Hence

        D  =  \frac{y *  d}{\lambda }

substituting values

       D  =  \frac{ 4.2 *10^{-3} *   0.29 *10^{-3}}{ 476.1 *10^{-9} }

        D  =  2.6 \ m

7 0
3 years ago
If a Styrofoam ball and a steel ball are the exact same size &amp; shape,which has more mass?
Zinaida [17]

Answer:

Steel

Explanation:

Mass is density times volume.

m = ρV

Since they have the same size and shape, they have the same volume.

Steel has a higher density than Styrofoam, so at the same volume, the steel ball will have more mass.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A simple harmonic oscillator oscillates with frequency f when its amplitude is
    5·1 answer
  • Explain why the model of this chemical reaction obeys the Law of Conservation of Matter.
    7·2 answers
  • A current is always developed in the secondary of a transformer. true or false
    15·1 answer
  • A northbound train and a southbound train meet each other on parallel tracks heading in opposite directions. The northbound trai
    6·2 answers
  • Sally is on a canoe that comes to a stop a small distance from the dock. Since it is such a small distance, Sally decides to jum
    13·1 answer
  • What dose air taste like and wrong answer only
    14·2 answers
  • Which of the following describe wind patterns created by a low-pressure front, where two air masses are interacting? Choose one
    15·1 answer
  • Two infinitely long parallel wires carry current in opposite directions. Wire 1 has current 15.0 A and wire 2 has current 19.9 A
    7·1 answer
  • How do you think the switch controls the flow of current to the light?
    7·1 answer
  • Motion is a change in<br><br> 1.Time<br> 2.Speed<br> 3.Position<br> 4.Velocity
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!