PHYSICS HIGH SCHOOL

A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval its acceleration is A) zero.
B) 10 km/hr.
C) 110 km/hr.
D) 1000 km/hr.

Answers

Answer 1
Answer: A.) acceleration is to increase or decrease in speed the only time your not accelerating is when your not moving or your going a constant speed 

Related Questions

The earth has a circumference of about 25000 miles. How is it expressed in scientific notation?
A Newton is 1 kgm/s^2 . Is this a fundamental unit or a derived unit?
work of 4 joules is done in stretching a spring from its natural length to 11 cm beyond its natural length. what is the force (in newtons) that holds the spring stretched at the same distance (11 cm)
A stone is thrown straight up from the roof of an 80 ft building. the height, in feet, of the stone at any time t, in seconds, measured from the ground is given by ℎ(????) = −16???? 2 + 64???? + 80. what is the maximum height the stone reaches?
Which of the following absorbs the MOST heat energy?a. red objects b. white objects c. black objects d. purple object

The visible surface of the Sun, which is also the deepest layer we can see with our eyes, is in which region of the Sun?

Answers

It is the photosphere

The earth is the _____ largest planet.
third
fourth
fifth
sixth

Answers

Answer: The earth is the fifth largest planet in the solar system.

Explanation:

We know that,

Jupiter is the first largest planet, Saturn is the second largest planet, Uranus is the third largest planet, Neptune is the fourth largest planet, Earth is the fifth largest planet and Venus is the sixth largest planet in the solar system.

Hence, The earth is the fifth largest planet in the solar system.

The earth is the fifth largest planet in our solar system.

Assuming 70% of Earth's surface is covered in water at an average depth of 2.5 mi, estimate the mass of the water on Earth in Kilograms.

Answers

This is an excellent question that i do not have the answer to.

Which one of the following parenting factors is associated with improved IQ scores in children? A. Strict discipline
B. Lenient discipline and fewer rules
C. A stable home and varied activities
D. Early instruction in reading

Answers

Answer: Option (C) is the correct answer.

Explanation:

The term IQ stands form intelligent quotient. When a child is provided with stable home environment in which there are less or rare conflicts, happy environment, understanding between individuals etc will lead to a stable growth of child.

Also, varied activities will help child to learn quickly and develop various skills.

Thus, a stable home and varied activities is the one parenting factor which is associated with improved IQ scores in children.
The correct answer is C. A stable home and varied activities.

Hope this helps! xoxo

a relative density bottle has a mass of 29.2 g when empty its mass is 116.2 g when it is full of liquid or diesel and when full of water it's mass is 129.2 g calculate the relative density of diesel​

Answers

Answer:

0.87

Explanation:

Given :

Mass of bottle = 29.2 g

Mass when filled with diesel = 116.2 g

Mass when filled with water = 129.2 g

The mass of water = (Mass when filled with water - mass of bottle)

Mass of water = 129.2 - 29.2 = 100 g

Mass of diesel = (Mass when filled with diesel - mass of bottle)

Mass of diesel = 116.2 - 29.2 = 87

Relative density of diesel = mass of diesel / mass of equal volume of water

Relative density = 87 / 100 = 0.87

At what point in the motion is the velocity zero and the acceleration zero simultaneously?At what point in the motion is the velocity zero and the acceleration zero simultaneously?

A. x>0 but xB. x=A
C. x<0.
D. x=0.
E. None of the above

Answers

Answer:

The correct answer is option E. This is because when a body is undergoing simple harmonic motion, the displacement, velocity and acceleration are constantly changing with respect to position and time.

Explanation:

When the body is passing through the equilibrium position so that the displacement at that point is zero, the velocity at that point is either maximum or minimum (Vmax or Vmin) which is dependent on which way the body is moving (the chosen direction of positive sense of motion). At the equilibrium position the acceleration is zero because the net force acting on the body is zero (that is the sun of the forces acting on the body along both directions of motion is equal to zero). Also when the body is at either its maximum positive displacemt, x = +A, or its maximum negative displacement x = -A, the velocity is zero and the body is instantaneously at rest. At this points the force (in either direction) acting on the body has it maximum value and as a result the acceleration has it maximum magnitude whether negative or positive depending on the chosen direction positive sense of motion.

At any other point in the course of the SHM (simple harmonic motion), the velocity (V) and acceleration (a) of the always have nonzero values and as a result they are never simultaneously equal to zero.

Thank you very much reading and I hope this is helpful to you.

Other Questions
Waves are created when a source of _________ (force) causes a vibration.
Water behind a dam has a certain amount of stored energy that can be released as the water falls over the top of the dam. It may be enough energy to turn a mill wheel or an electricity-generating turbine. Choose the term that best describes the type of energy stored in the water at the top of the dam. potential energykinetic energymechanical energy
A child is sending pulses down a stretched rope at a rate of 2 pulses per second. The distance between the pulses is 5 meters. What is the speed of the wave?a. 5 m/s c. 2 Hz b. 10 m/s d. 2.5 m/s User: Longitudinal seismic waves are known as a. primary waves. b. secondary waves. c. surface waves. d. transverse waves.
Two technicians are discussing hydraulics. Technician A says that if pistons of the same size are used, motion and force can be increased or decreased. Technician B says that if a small piston acts upon a larger piston, the force of the larger piston will increase, but the distance it travels will decrease. Who is correct? A. Technician B only B. Technician A only C. Both Technician A and B D. Neither Technician A nor B