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
Tatiana [17]
3 years ago
10

The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity.

Physics
2 answers:
sweet [91]3 years ago
8 0

Answer: is traveling on a curve in the road

Explanation:

Andreas93 [3]3 years ago
8 0

Answer: its slowing down

Explanation:

The car is slowing down because its on the corner of the track.

If it were to go the same speed the other cars are going while on the straight part of the track it would go off the track therefore the car must slow down to stay in the race

You might be interested in
A gardener uses a 60-N wheelbarrow to transport two bags of fertilizer weighing W = 252-N. Determine the maximum allowable horiz
Butoxors [25]

Explanation:

Let us assume that the maximum allowable horizontal distance be represented by "d".  

Therefore, torque equation about A will be as follows.

   60 \times 0.15 + 252 \times 0.15 \times 2 + 252 \times d = 2 \times 75 \times (0.7 + 0.15 + 0.15)

      d = \frac{[2 \times 75 \times (0.7+0.15+0.15) - 60 \times 0.15 - 252 \times 0.15 \times 2]}{252}

       d = 0.409 m

Thus, we can conclude that the maximum allowable horizontal distance from the axle A of the wheelbarrow to the center of gravity of the second bag if she can hold only 75 N with each arm is 0.409 m.

6 0
3 years ago
Consider identical spherical conducting space ships in deep space where gravitational fields from other bodies are negligible co
Illusion [34]

Answer:

 q = 8.61 10⁻¹¹ m

charge does not depend on the distance between the two ships.

it is a very small charge value so it should be easy to create in each one

Explanation:

In this exercise we have two forces in balance: the electric force and the gravitational force

          F_e -F_g = 0

          F_e = F_g

Since the gravitational force is always attractive, the electric force must be repulsive, which implies that the electric charge in the two ships must be of the same sign.

Let's write Coulomb's law and gravitational attraction

         k \frac{q_1q_2}{r^2} = G \frac{m_1m_2}{r^2}

In the exercise, indicate that the two ships are identical, therefore the masses of the ships are the same and we will place the same charge on each one.

          k q² = G m²

          q = \sqrt{ \frac{G}{k} }    m

we substitute

           q = \sqrt{ \frac{ 6.67 \ 10^{-11}}{8.99 \ 10^{9}} }   m

            q = \sqrt{0.7419 \ 10^{-20}}   m

           q = 0.861 10⁻¹⁰ m

           q = 8.61 10⁻¹¹ m

This amount of charge does not depend on the distance between the two ships.

It is also proportional to the mass of the ships with the proportionality factor found.

Suppose the ships have a mass of m = 1000 kg, let's find the cargo

            q = 8.61 10⁻¹¹ 10³

            q = 8.61 10⁻⁸ C

             

this is a very small charge value so it should be easy to create in each one

6 0
2 years ago
A meter stick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter st
inessss [21]

Answer:

t=0.193s

Explanation:

What is said is that the meter fell d=18.3cm=0.183m under the action of gravity. We can use the formula for accelerated motion:

d=v_0t+\frac{at^2}{2}

Since it departed from rest it will mean that:

d=\frac{at^2}{2}

So our time will be:

t=\sqrt{\frac{2d}{a}}

Which for our values is:

t=\sqrt{\frac{2(0.183m)}{(9.81m/s^2)}}=0.193s

7 0
3 years ago
what is the pressure on a circular helipad of diameter 100 m on which a helicopter of weight 40,000 N is landing. *
Luba_88 [7]

Answer:

5.09 Pa

Explanation:

Area of the circle = πr²

The diameter is given, so 100/2 = 50 m is the radius.

π x 50² = 7854 m²

Pressure = force/area

Pressure = 40000/7854

Pressure = 5.09 Pa

Hope this helps!

4 0
2 years ago
Suppose you want to make the demonstration more dramatic by attracting as much hair as possible with the balloon. Which of the f
Artist 52 [7]

Answer:

B. Increase the electric force by rubbing the balloon for a longer period of time.

Explanation:

6 0
2 years ago
Other questions:
  • A horizontal uniform bar of mass 3 kg and length 3.0 m is hung horizontally on two vertical strings. String 1 is attached to the
    10·1 answer
  • A single insulated duct flow experiment using air operating at steady-state is performed in a lab. One measurement location (Sta
    7·1 answer
  • The factors that affects the gravitational force between two objects are
    7·1 answer
  • You arrive at an intersection with traffic lights that are not working because of a power outage. What do you do?
    7·2 answers
  • Your desktop houses its system unit in a frame made of metal. what is the term for this frame?
    11·1 answer
  • If the Net Force of the object is 30 N to the left, and mass is 3 kg what is the objects acceleration?
    9·1 answer
  • The sound waves travel along this​
    14·1 answer
  • d. On the afternoon of January 15, 1919, an unusually warm day in Boston, a 17.7-m-high, 27.4-m-diameter cylindrical metal tank
    15·1 answer
  • What is the submarine's maximum safe depth in sea water? The pressure inside the submarine is maintained at 1.0 atm
    9·1 answer
  • You position two plane mirriors at right angles to each other a light ray strikes one mirrior at an angle of 60 to the normal an
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!