﻿ Select all that apply. Which of the following corresponds to absolute zero? 0°C -273°C 0 K -273 K - AssignmentGrade.com

Select all that apply. Which of the following corresponds to absolute zero? 0°C -273°C 0 K -273 K

QUESTION POSTED AT 18/04/2020 - 06:56 PM

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1. An object is moving to the right in a straight line. The net force acting on the object is also directed to the right, but the magnitude of the force is decreasing with time. How will the motion of the object change? a. It will continue to move to the right, its speed increasing with time. b. It will stop and then begin moving to the left. c. It will continue to move to the right at a constant speed. d. It will continue to move to the right, its speed decreasing with time. 2. A glass table top is able to exert a maximum normal force of 1600 N. A large object with a mass of 165 kg is gently lowered onto the center of the table top, then released there. What most likely will happen next? a. The table top will crack but still hold the object. b. The table top will break and the object will fall to the floor. c. The object will bounce off the table. d. The object will rest on the table top, which remains in tact. 3. A rock at rest has weight 138 N. What is the weight of the rock when it is accelerating upward at 12 m/s2? a. 115 N b. 63 N c. 304 N d. 138 N 4. A chair of mass 30.0 kg is at rest on a horizontal floor. The floor is not frictionless. You push on the chair with a force of 80.0 N directed at an angle of 35.0° to the floor. What is the normal force that the floor exerts on the chair? a. 363 N b. 340 N c. 294 N d. 317 N 5. Two particles are separated by a distance d. At this distance, the strong interaction between them is much greater than the electrical interaction. What are the possible values of d? a. extremely large values, such as the distances between the planets and sun b. extremely small values, such as the distances between particles in an atomic nucleus c. values between 1 mm and 1 m d. values between 1 m and 1 km 6. A soccer player kicks a ball. Why does the action force exerted by the player's foot cause a different motion than the reaction force? a. The action force and the reaction force act on different objects. b. The action force is greater than the reaction force. c. The reaction force is greater than the action force. d. The action force and the reaction force act in opposite directions. 7. A box of weight 320 N is being pulled to the right by a pulling force F-> of magnitude 44 N. The coefficient of static friction between the box and the floor is 0.15. To make an accurate free-body diagram of the box, the letter f in the diagram above should be replaced with the label _____. a. 4.0 N b. 48 N c. 44 N d. 280 N 8. I have the answer 9. A man pulls a wagon with a handle that is at an angle of 42° with the ground. If the man pulls with 330 N of force, how much force pulls the wagon forward? a. 110 N b. 220 N c. 245 N d. 330 N 10. In this free-body diagram, the weight (W) and normal force (n) have equal magnitudes. The magnitudes of any forward or backward forces, however, are not determined. The free-body diagram will not apply to which of these objects or persons? a. a box sliding across a table at constant speed b. an automobile accelerating on a flat highway c. a box at rest on a table d. a woman jumping off the floor 11. A force of 1 N will cause a mass of 1 kg to have an acceleration of 1 m/s2. Therefore, a force of 8 N applied to a mass of 1 kg will cause it to accelerate at what rate? a. 8 m/s2 b. 0.13 m/s2 c. 1 m/s2 d. 9 m/s2 e. 64 m/s2

QUESTION POSTED AT 02/06/2020 - 01:27 AM

A cathode ray tube is made of glass with a small amount of some kind of gas in it. It has metal electrodes at each end to pick up an electric current. The electrodes are named "positive” and "negative,” which were words used by Benjamin Franklin in the 1700s to describe electricity. A bright ray forms in the gas when an electric current is applied to metal electrodes. In the 1800s, an important scientist suspected that the negatively charged particles in a cathode ray were present in all atoms. What procedure would allow that scientist to investigate this idea

QUESTION POSTED AT 01/06/2020 - 03:39 PM

What are examples of devices that use electromagnetic waves? Check all that apply. FM radios microwaves TV remote controls alarm clocks X-rays

QUESTION POSTED AT 01/06/2020 - 03:07 PM

A load of bricks is lifted to the second floor of a building. How do work and power relate to this job? a.The longer the job takes, the more work is done. b.The faster the job is done, the greater the power. c.The greater the power applied, the more work is done. d.The less work is done, the more power is needed.

QUESTION POSTED AT 01/06/2020 - 03:00 PM

If a train is 100 kilometers away, how much sooner would you hear the train coming by listening to the rails (iron) as opposed to listening for it standing by the track? In other words, how much faster will the sound travel through the iron rails than through the air? Assume the air temperature is 0°C. Sound will reach you seconds sooner.

QUESTION POSTED AT 01/06/2020 - 02:40 PM

A television of mass 8kg sits on a table the coefficient of static friction between the table and television is .48 what is the minimum applied force that will cause the television to slide

QUESTION POSTED AT 01/06/2020 - 02:26 PM

A train with a constant velocity of +28.6 m/s approaches a small town . the operator applies the brake, reducing the train's velocity to +11.4 m/s. if the average acceleration of the train during braking is 1.35 m/s2, for what elapsed time does the operator apply the brake?

QUESTION POSTED AT 01/06/2020 - 01:52 PM

As an auto mechanic, you need to determine the emf and internal resistance of an old battery. you perform these two measurements: (1) you apply a voltmeter to the battery\'s terminals and read 11.8 v. (2) an ammeter applied to the terminals indicates 16.5 a. what are the battery\'s emf and internal resistance?

QUESTION POSTED AT 01/06/2020 - 01:40 PM

A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas? (Assume that there's no change in pressure.) A. 0.0006 m3 B. 0.3198 m3 C. 0.2333 m3 D. 0.2146 m3

QUESTION POSTED AT 01/06/2020 - 12:16 PM

The Siberian Husky is a medium dog, weighing between 16-27kg (35-60lbs). These dogs have strong pectoral and leg muscles, allowing them to move through dense snow. If they had heavier muscles, they would sink deeper into the snow and move slower. Yet, if they had lighter muscles, they would not be strong enough to pull sleds and equipment.This is an example of which type of natural selection?

QUESTION POSTED AT 01/06/2020 - 11:53 AM

Kepler's harmonic law states that the distance of a planet from the Sun corresponds to the period of time it takes the planet to orbit the Sun. The formula looks like this: . Which statement best describes this formula summarizing Kepler's harmonic law? A. The square of the orbital period of a planet around the sun is proportional to the cube of the planet's orbital radius. B. The square of the orbital radius of a planet to the sun is proportional to the cube of the planet's orbital period. C. The cube of the planet's orbital radius equals the orbital period of a planet around the sun. D. The orbital period to the second power of a planet around the sun is proportional to the planet's orbital radius to the fourth power.

QUESTION POSTED AT 29/05/2020 - 05:08 PM

96 K = _____ -177°C 0°C 96°C 369°C

QUESTION POSTED AT 29/05/2020 - 02:50 PM

More work was done. Which statement best describes the cause? There was more force applied; therefore, there was less movement. There was less force applied; therefore, there was more movement. There was less force applied; therefore, there was less movement. There was more force applied; therefore, there was more movement.

QUESTION POSTED AT 29/05/2020 - 12:59 PM

If a force of 27 N is applied to an object with a mass of 6 kg, the object will accelerate at m/s2

QUESTION POSTED AT 29/05/2020 - 12:52 PM

In order for work to be done, what three things are necessary? power, a force, and movement in the opposite direction of the applied force balanced forces, motion, and distance covered over time unbalanced force, motion in the same direction as the applied force, and power unbalanced force, motion, and movement in the same direction of the applied force

QUESTION POSTED AT 29/05/2020 - 12:39 PM

A force raises vertically a box of mass 14.0 kg through a distance of 20.0 m without causing acceleration. determine the work done on the box by the applied force. use g = 9.8 m.s-2

QUESTION POSTED AT 29/05/2020 - 12:02 PM

Which statement best describes how work and power are different? (2 points) Select one: a. To find work we need to know force and distance; to find power we need to know force and velocity. b. To find work we need to know energy and time; to find power we need to know energy and distance. c. To find work we need to know velocity and distance; to find power we need to know distance and time. d. To find work we need to know distance and force; to find power we need to know energy and velocity.

QUESTION POSTED AT 29/05/2020 - 10:33 AM

If a force of 16 N is applied to an object with a mass of 7 kg, the object will accelerate at

QUESTION POSTED AT 29/05/2020 - 10:27 AM

Which statements describe polyatomic ions? Check all that apply. A)Polyatomic ions have many charges. B)Polyatomic ions have one overall charge. C)Polyatomic ions repel other ions to form ionic bonds. D)Polyatomic ions attract other ions to form ionic bonds. E)Polyatomic ions are made up of only one type of atom. F)Polyatomic ions are made up of two or more types of atoms.

QUESTION POSTED AT 29/05/2020 - 10:20 AM

A hypodermic needle consists of a plunger of circular cross-section that slides inside a hollow cylindrical syringe. when the plunger is pushed, the contents of the syringe are forced through a hollow needle (also of circular cross-section). if a 4.0-n force is applied to the plunger and the diameters of the plunger and the needle are 1.2 cm and 2.5 mm, respectively, what force, in n, is needed to prevent fluid flow at the needle?

QUESTION POSTED AT 29/05/2020 - 09:37 AM

The distance versus time plot for a particular object shows a quadratic relationship. Which column of distance data is possible for this situation? Time (s) A. Distance (m) B. Distance (m) C. Distance (m) D. Distance (m) E. Distance (m) 0 0 2.00 9.00 ‡ ‡ 1 1.00 4.00 18.00 1.00 1.00 2 4.00 6.00 27.00 0.50 0.25 3 9.00 8.00 36.00 0.33 0.11 4 16.00 10.00 45.00 0.25 0.06 5 25.00 12.00 54.00 0.20 0.04 6 36.00 14.00 63.00 0.16 0.02 column A column B column C column D column E

QUESTION POSTED AT 28/05/2020 - 11:11 PM

Venn diagrams are used for comparing and contrasting topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics that apply to only that topic. This Venn diagram is comparing longitudinal waves and transverse waves. “Parallel” and “Perpendicular” are switched. The slinky descriptions of motion are switched. Particles travel along the wave in longitudinal waves. Particles move long distances in transverse waves.

QUESTION POSTED AT 28/05/2020 - 09:10 PM

Venn diagrams are used for comparing and contrasting topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics that apply to only that topic. This Venn diagram is comparing longitudinal waves and transverse waves. Where is the error in this Venn diagram?

QUESTION POSTED AT 28/05/2020 - 08:14 PM

Hereditary rickets is a sex-linked dominant trait that results in low levels of vitamin D. Which genotypes would result in someone having rickets? Check all that apply. XHXH XHY XhY XHXh XhXh

QUESTION POSTED AT 28/05/2020 - 08:11 PM

Which of the following is NOT true of electromagnetic waves? A. An electric field is created in any region of space in which a magnetic field is changing with time. B. A magnetic field is created in any region of space in which an electric field is changing with time. C. Induction of electric fields by changing magnetic fields occurs only if a conducting material is present. D. Induction of magnetic fields by changing magnetic fields occurs even in the absence of a conducting material. Reset Selection

QUESTION POSTED AT 28/05/2020 - 07:35 PM

For Brainliest 15 points! A car comes to a stop over a distance of 30.0 m after the driver applies the brakes. If the car decelerates at a constant rate of –3.50 m/s2, what was the car's original speed?

QUESTION POSTED AT 28/05/2020 - 07:27 PM

In an experiment refractive index of glass was observed to be 1.45,1.56,1.54,1.44,1.54and1.53. Calculate mean value of refractive index,mean absolute error, fractional error and percentage error. Express the result in terms of absolute error and percentage error.

QUESTION POSTED AT 28/05/2020 - 06:44 PM

What is a simple machine? A. any object that makes work easier when a single force is applied by changing the strength or the direction of that force B. any combination of objects that magnifies the input force so that the output force is greater C. any object or group of objects, that when connected to a source of electricity, make work easier D. any object, that when connected to a fossil fuel source, makes work easier

QUESTION POSTED AT 28/05/2020 - 06:49 AM

1 2 3 4 5 6 7 8 9 10 TIME REMAINING 32:11 Which statements describe how a machine can help make work easier? Check all that apply. It can put out more force than the input force by decreasing the distance through which force is applied. It can increase the amount of work performed if the output force is in the same direction as the input force. It can apply a force to an object in a different direction than the force applied to the machine. It can increase the distance through which a force acts by exerting less force than was used on it. It can exert a greater force through a greater distance than the force used on the machine.

QUESTION POSTED AT 27/05/2020 - 11:29 PM

Choose all that apply. Solids, liquids, and gases can be distinguished by their: molecular weight shape temperature kinetic energy mass density

QUESTION POSTED AT 27/05/2020 - 10:43 PM