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
umka2103 [35]
3 years ago
11

Can u answer 4 and 5 for me

Physics
1 answer:
Luda [366]3 years ago
8 0
I don’t know what the answers are
You might be interested in
A golf ball strikes a hard, smooth floor at an angle of 39.8 ° and, as the drawing shows, rebounds at the same angle. The mass o
tangare [24]

Answer:

The magnitude of the impulse is 1.33 kg m/s

Explanation:

please look at the solution in the attached Word file

Download docx
7 0
3 years ago
Read 2 more answers
A 1.0 kg rock is thrown straight upward with an initial speed of 8.0 m/s. What is its speed
Ronch [10]

Answer:5.7m/s

Explanation:

Mass=1kg

Initial velocity=u=8m/s

height=h=1.6m

Final velocity =v

Acceleration due to gravity=g=9.8m/s^2

v^2=u^2-2xgxh

v^2=8^2-2x9.8x1.6

v^2=8x8-2x9.8x1.6

v^2=64-31.36

v^2=32.64

Take the square root of both sides

√(v^2)=√(32.64)

v=5.7

Speed at the height of 1.6m is 5.7m/s

8 0
3 years ago
Is scientific law and scientific theory the same?<br> True or false??<br><br> PLEASE HELP ME
VMariaS [17]
Is the sciencetjfic law and security theory the same?



TRUE
8 0
3 years ago
Read 2 more answers
Your lab instructor has asked you to measure a spring constant using a dynamic method—letting it oscillate—rather than a sta
yuradex [85]

Answer:

  k = 6,547 N / m

Explanation:

This laboratory experiment is a simple harmonic motion experiment, where the angular velocity of the oscillation is

         w = √ (k / m)

angular velocity and rel period are  related

         w = 2π / T

substitution

         T = 2π √(m / K)

in Experimental measurements give us the following data

  m (g)     A (cm)    t (s)   T (s)

  100        6.5         7.8    0.78

  150        5.5          9.8   0.98

   200      6.0        10.9    1.09

   250       3.5        12.4    1.24

we look for the period that is the time it takes to give a series of oscillations, the results are in the last column

        T = t / 10

To find the spring constant we linearize the equation

        T² = (4π²/K)    m

therefore we see that if we make a graph of T² against the mass, we obtain a line, whose slope is

         m ’= 4π² / k

where m’ is the slope

           k = 4π² / m'

the equation of the line of the attached graph is

       T² = 0.00603 m + 0.0183

therefore the slope

       m ’= 0.00603  s²/g

    we calculate

         k = 4 π² / 0.00603

          k = 6547 g / s²

we reduce the mass to the SI system

         k = 6547 g / s² (1kg / 1000 g)

         k = 6,547 kg / s² =

         k = 6,547 N / m

let's reduce the uniqueness

         [N / m] = [(kg m / s²) m] = [kg / s²]

7 0
3 years ago
Which element(s) is/are not balanced in this equation?
Shkiper50 [21]
All elements are balanced. There are 1 Mg, 1 O, 2 Li's and 2 Cl's.
3 0
3 years ago
Other questions:
  • Recall that the spring constant is inversely proportional to the number of coils in the spring, or that shorter springs equate t
    6·1 answer
  • Two forces are acting on a 5.00 kg mass. One of the forces is 10.0 N south and the other is 15.0 N east. The direction of the ac
    5·1 answer
  • Who invented steam engine​
    13·2 answers
  • Block A, with a mass of 4.0 kg, is moving with a speed of 2.0 m/s while block B , with a mass of 8.0 kg, is moving in the opposi
    12·1 answer
  • How does the game of Nukem resemble volleyball? What skills are the same? What skills are different?​
    12·2 answers
  • Which statements about braking a car are true? A)The greater the kinetic energy of a car, the longer it takes for the car to sto
    12·2 answers
  • Which of the following is true about the following lever?
    9·2 answers
  • Where did the gold of the Inca civilization come from?
    6·1 answer
  • The resistivity of gold is at room temperature. A gold wire that is 0.9 mm in diameter and 14 cm long carries a current of 940 m
    15·2 answers
  • A testable prediction is a(n) ______. Group of answer choices a. hypothesis b. experiment c. exercise d. variable
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!