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
Advocard [28]
3 years ago
7

Indicate whether the following statements are always true or can be false. An object's velocity will change if a net force acts

on the object. In order not to slow down, a car moving at a constant velocity needs a small net force applied. The net force which acts on an object which remains at rest is zero. If an object's speed does not change, no net force is acting on the object. If two objects are under the influence of equal forces, they have the same acceleration. During the collision of a car with a large truck, the truck exerts a greater force on the car than the car exerts on the truck.
Physics
1 answer:
Sergio [31]3 years ago
3 0

Answer:

1-An object's velocity will change if a net force acts on the object. (True)

2-In order not to slow down, a car moving at a constant velocity needs a small net force applied. (False)

3- The net force which acts on an object which remains at rest is zero. (True)

4- If an object's speed does not change, no net force is acting on the object.(True)

5- If two objects are under the influence of equal forces, they have the same acceleration. (False)

6- During the collision of a car with a large truck, the truck exerts a greater force on the car than the car exerts on the truck.(False) (Newton Third Law)

You might be interested in
You push a refrigerator with a force of 100 N. If you move the refrigerator a distance of 5 m while you are pushing, how much wo
ddd [48]

The work done to push the refrigerator is 500 Nm.

Explanation:

Work done is the measure of force required to move any object from one point to another. So it is calculated as the product of force and displacement.

If the force increases the work done will increase and similarly, the increase in displacement increases the work done. So to push the refrigerator work should be done on the object and not by the object.

As the force is 100 N and the displacement is 5 m then, work done can be measured as

Work = Force × Displacement

Work = 100 × 5 = 500 Nm

So the work done to push the refrigerator is 500 Nm.

7 0
3 years ago
What is the marble's range if it is fired horizontally from 1.6 m above the ground?
cupoosta [38]

Answer:

The answer is 6.40 meters.

Explanation:

The speed v = √(2gh)

v = √( 2×9.8×6.4) = 11.2 m/s

After, finding the time it takes to hit the ground from a height of 1.6 meters.

time = √(2H÷g)

time = √(2×1.6÷9.8)

time = 0.5714 seconds.

Horizontal distance is speed × time = 11.2 × 0.5714 = 6.40 meters.

5 0
3 years ago
which actions most likely cause the domains within a material to lose their alignment and become more randomized
zimovet [89]

answer:

heating the material

placing the material in a magnetic field of opposite polarity

hitting the material

4 0
3 years ago
Read 2 more answers
- Explain why an aircraft will tend to lose height
olganol [36]

Answer:

the planes wings are lifting  at an angle to gravity so the plane isn't lifting as much against gravity when it banks.  some of the wing lift is going into turning the plane.   :)   so it needs more lift to bank and stay up

Explanation:

8 0
2 years ago
A light with a second-order bright band forms a diffraction angle of 30. 0°. The diffraction grating has 250. 0 lines per mm. Wh
Luden [163]

The distance between two successive troughs or crests is known as the wavelength. The wavelength of the light will be 1000 nm.

How do you define wavelength?

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

Diffraction angle= 30⁰

Diffraction grating per mm= 250

wavelength = ?

Mathematically the equation of bright band is given by

\rm \lambda= \frac{sin\theta}{nN}

\rm \lambda= \frac{sin23^0}{250\times 2}

\rm \lambda= 0.000001 m

\rm \lambda= 1000 nm

Hence the wavelength of the light will be 1000 nm.

To learn more about the wavelength refer to the link;

brainly.com/question/7143261

8 0
2 years ago
Read 2 more answers
Other questions:
  • If you place a balloon in the freezer, it will __________.
    8·2 answers
  • The primary difference between a scientific theory and a hypothesis is that a theory is: A prediction of an experimental outcome
    7·1 answer
  • What is the amplitude of a wave?
    6·1 answer
  • How are electromagnetic waves different than all the other waves
    7·1 answer
  • A 75.0 kg students sits 1.15 m away from a 68.4 kg student. What is the force of gravitational attraction between them?
    15·1 answer
  • Tetraphosphorus hexoxide is formed by the reaction of phosphorus with oxygen gas:P4(s) + 3 O2(g)  P4O6(s)If a mixture of 75.3 g
    6·1 answer
  • Are electrolytes the same as ions?
    9·2 answers
  • Why do we teach young children through song, rhyme, and rhythm?<br> ?
    8·2 answers
  • Which transformation will map figure L onto figure L'? (1 point) Two congruent triangles Figure L and Figure L prime are drawn o
    15·1 answer
  • Which of the following determines the natural frequency of an object?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!