A 1600N force is applied to a 85kg mass what is the acceleration of the mass?

Answers

Answer 1

Answer: newton 3rd law:
F=ma
1600=85*a
1600/85=a
a=18.82 m/s^2

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Which object carries the greatest amount of kinetic energy?

Answers

That Depends
The Object With Greater Mass Has Greater Amount Of Kinetic Energy

A box is being pulled to the right on flat ground with a force of 112 N at an angle of 42° to the horizontal. What is the x-component of the force of tension?

Answers

The x-component is related with the Force through the trigonometric function cosine.

cos(42°) = x-component / F ⇒ x-component = Fcos(42°) = 112N*0.743 = 83.2 N

Describe how the design of a vacuum flask keeps the liquid inside hot ?

Answers

the gap between the two flasks is partially evacuated of air creating a near vacuum which significantly reduces heat transfer by conduction or convection

The gap between the two flasks is partially evacuated of air, creating a near-vacuum which significantly reduces heat transfer by conduction or convection. Vacuum flasks are used domestically to keep beverageshot or cold.

Imagine the door to a theatre is opened and you are standing outside. How is it possible that you can hear the sound of the movie or play even if you cannot see the screen or stage ?A) reflection only happens with sound waves not waves of light so the sound waves bounce out to your ears.

B) the sound waves refract as they move from one medium to another

C) the darkness in the theatre absorbed light but not sound so you can hear

D) the sound waves diffract much more than the light waves so try bend and spread as they move through the doorway.

Answers

Imagine the door to a theatre is opened and you are standing outside. You can hear the sound of the movie or play even if you cannot see the screen or stage because the sound waves diffract much more than the light waves so try bend and spread as they move through the doorway. The answer is letter D

Which of these physical settings makes sense for an object moving along the x-axis? Its position at any time is given by x(t) = 3cos(π t) + 2a. A skydiver falling from a plane, before she opens her parachute.
b. The shadow cast by a rock that's stuck on the edge of a spinning wheel.
c. A car driving from San Diego to Los Angeles.
d. An ant walking at a steady pace from the tip of a propeller toward the hub.
e. None of these settings.

Answers

Answer:

option b is correct.

Explanation:

Since the position as a function of time is given by

$x(t)=3cos(\pi t)+2$ which is a periodic function thus the motion of the particle repeats after a time of 2 seconds thus among the given options only option b is case of repetitive motion thus option b is most appropriate since the spinning wheel repeates it's motion.

Scientists have observed that the average sunspots have increased in the last 50 years. Which of these statements best describes an effect of this increase in sunspots? A) Earth's temperature has become cooler.
B) Earth's temperature has not changed over time.
C) Earth's temperature has become warmer.
D) Earth's temperature has reduced by fifty times.

Answers

Answer:

Earth's temperature has become cooler

Explanation:

The number of sunspots, as you have learned, can indicate whether the sun is in a maximum-activity period or a minimum-activity period. Some scientists believe this can have an overall effect on the climate of Earth.

The right answer for the question that is being asked and shown above is that: "B) Earth's temperature has not changed over time." Scientists have observed that the average sunspots have increased in the last 50 years. The statement that best describes an effect of this increase in sunspots Earth's temperature has not changed over time.

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two small balls are suspended on parallel threads of the same length so that they touch each other in the vertical position. the mass of the first ball is 0.4kg and the mass of the second ball is 200g. the first ball is deflected so that its centre of mass rises to a height of 6cm and it is then released. to what maximal height will the 200g ball rise if the collision is elastic?