Physics Middle School

REALLY NEED HELP, 3 QUESTIONS 20 POINTS. ONLY ANSWER IF YOU KNOW THE CORRECT ANSWER. DO NOT ANSWER WITH "I DON'T KNOW, SORRY" JUST FOR THE BRAINLY POINTS. Thanks very much, have a great day. ( I Will report you if you answer with "I don't know, sorry"
1) A spring with a natural height of 60 mm is compressed by a 300 g mass to a new height of 54 mm.
 Find the spring constant in SI units.
 Find the height of the spring if the 300 g mass were replaced by a 400 g mass

2) A spring is stretched by 2m with a force of 100 N. Calculate its spring constant.

3) You have just bought an innerspring mattress that contains coil springs in a rectangular array 20 coils wide and 40 coils long. You estimate that when you lie on the mattress, your weight is supported by about 200 springs (about one-fourth of the total number of springs in the mattress). You observe that the springs compress
about 2.0 cm when you lie on the mattress. Assuming that your weight of 600 N is supported equally by 200 springs, find the force constant of each spring.

Answers

Answer 1

Answer:

1. a. -490N/m

  b. -653.333N/m

2. -50N/m

3.  (i don't know this one but i hope the rest is helpful)

Related Questions

In this experiment you added more coils to pick up more __In this experiment you added more coils to pick up more __

Answers

Answer:

strength

Explanation:

Assuming that you are talking about an electromagnet, you add more coils to increase the strength or magnetic field of the electromagnet

The answer is strength :))

Eric threw a baseball 20 meters in 0.5 seconds. What was the average speed of the baseball to the nearest hundredths of a m/sec.

Answers

Answer:

40m/sec

Explanation:

speed = distance ÷ time

speed = 20 ÷ 0.5

speed = 40 m/sec

Answer:

40 m/s

Explanation:

Speed or velocity is distance over time. Therefore,

20 meters/0.5 seconds

= 40 m/s

PLS HELP ASAP PLEASE PLEASE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Answers

Im pretty sure the answer is d
Other Questions
please help it's urgent. Scientists frequently use all of the following to support the theory that organisms change over time except.Chocies:1. Similarities in DNA2. Similarities in early development3. Similarities in body structure4. Similarities in number of mates.This is for science the following chart shows the number of rows in an auditorium and the total number number of seats. what equation defines the number of seats with respect to the number of rows?a. s=20r+100b. s=40r+120c. s=20r+60d. s=20r I need the answer quickly Whats hamlets plan A) kill Claudius in his sleep B) flee to France C) join with Norway in their attack on Claudius army D) pretend to be crazy One of the following bonds is nonbonding intermolecular interaction Select one: a. ionic bond b. Van der Waals C. covalent bond d. polar bond Enter 4 digit code( need help!!) The demand for cooldrink is price elastic if Question 1Find an expression equivalent to 8(2x+1)(x-2)(x+3) How long does it take for an 8 kg pumpkin to hit the ground if dropped from a height of 55 m. The probability of a basketball player making a free throw is 76%. In practice she shoots 10 free throws. What is the probability that he makes 7 free throws? who elects the executive brench 23. ANALYZING EQUATIONS The cross section (withunits in inches) of a parabolic satellite dish can be modeled by the equation y=1/38 x^2 How far is thereceiver from the vertex of the cross section? Explain. Time periods for a goal include which of the following? short-term mid-term intermediate-term long-term ASAP in the middle of this quiz Which of the following arguments might convince a local school board of the need to train upper elementary school students in IT practices?A As technology continues to advance rapidly, the need for IT professionals grows, providing more opportunities for employment of individuals skilled and experienced in the field of IT. B Brain research shows that elementary students are better able to understand complex procedures; therefore, upper elementary students are more likely to understand the principles of IT than high school or college students.C School computers break down often because of student use; therefore, the students should be responsible for fixing them.D Computers are the wave of the future; therefore, elementary students should have a complete understanding of how they function. If m PLZ HELP BC MY TEACHER IS NOT A GOOD TEACHER (this is science)Suppose water, carbon dioxide, and nitrogen were not recycled. What effects might this have on life on Earth? whats 8.43 x 10^7 in standard form? 5. The evidence for evolution by natural selection. which property is used in the following? 2(8+9)= 2*8+2*9a. None of the aboveb. Association propertyc. Commutative propertyd. Multiplication property of zero