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
astra-53 [7]
3 years ago
9

PLEASE HELPPPPP!!!! :)

Physics
1 answer:
GuDViN [60]3 years ago
4 0

Answer:

F=X.F=mxq. 3. 1 N/kg=0.5kg g=9.80

You might be interested in
Select the correct answer.
Serhud [2]

Answer:

b hope this helps

Explanation:

5 0
3 years ago
Read 2 more answers
A 26.0 g ball is fired horizontally with initial speed v0 toward a 110 g ball that is hanging motionless from a 1.10 m -long str
mart [117]

Answer:

7.3 ms^{-1}

Explanation:

Consider the motion of the ball attached to string.

In triangle ABD

Cos50 = \frac{AB}{AD} \\Cos50 = \frac{AB}{L}\\AB = L Cos50

height gained by the ball is given as

h = BC = AC - AD \\h = L - L Cos50\\h = 1.10 - 1.10 Cos50\\h = 0.393 m

M  = mass of the ball attached to string = 110 g

V = speed of the ball attached to string just after collision

Using conservation of energy

Potential energy gained = Kinetic energy lost

Mgh = (0.5) M V^{2} \\V = sqrt(2gh)\\V = sqrt(2(9.8)(0.393))\\V = 2.8 ms^{-1}

Consider the collision between the two balls

m  = mass of the ball fired = 26 g

v_{o} = initial velocity of ball fired before collision = ?

v_{f} = final velocity of ball fired after collision = ?

using conservation of momentum

m v_{o} = MV + m v_{f}\\26 v_{o} = (110)(2.8) + 26 v_{f}\\v_{f} = v_{o} - 11.85

Using conservation of kinetic energy

m v_{o}^{2} = MV^{2} + m v_{f}^{2} \\26 v_{o}^{2} = 110 (2.8)^{2} + 26 (v_{o} - 11.85)^{2} \\v_{o} = 7.3 ms^{-1}

3 0
3 years ago
Match the following. Match the items in the left column to the items in the right column.
Lorico [155]

Answer:

1. A fossil that is widespread geographically but only occurs in one layer or a small number of layers of rock

2. Sediment deposited into water will spread in a horizontal and continuous sheet

3. Any undisturbed sequence of layered rocks has the oldest rock on the bottom and newest rock on the top

4. Study of fossils

5. Study of rock layers and the process that form them

Sorry if any of these are wrong

5 0
3 years ago
Explain how an intrusive igneous rock could become a metamorphic rock and then an extrusive igneous rock.
sleet_krkn [62]
1.igneous rocks are formed when magma or lava cools and hardens
2. the cooling rate of the rock
5 0
4 years ago
A beam of light, traveling in air, strikes a plate of transparent material at an angle of incidence of 56.0°. It is observed tha
tankabanditka [31]

Answer:

the index of refraction for the transparent material is 1.48

Explanation:

let n1 = 1.0 be the refractive index of air and n2 be the refractive index of the trasnparent material.

then:

Snell's Law state that:

n1×sin(∅1) = n2×sin(∅2)

where ∅1 = 56.0° is the angle of incidence and  ∅2 = 90 - 56.0 = 34° be the angle refraction.

n1×sin(∅1) = n2×sin(∅2)

          n2 = n1×sin(∅1)/sin(∅2)

               =  (1.0)×sin(56.0°)/sin(34.0°)

               =  1.48

Therefore, the index of refraction for the transparent material is 1.48

3 0
4 years ago
Other questions:
  • It is harder to stop a rolling bowling ball than a rolling ping pong ball when both are rolling at the same velocity. Which is t
    12·2 answers
  • Its mass is 20 grams, and its density is 7.87 g/cm3. What’s the larger cube’s volume?
    8·1 answer
  • An objects weighs 30n on earth a second object weighs 30n on thee moon which has the greatest mass of is it the same
    13·1 answer
  • A weightlifter can exert an upward force of 3750 N. If a dumbbell has a mass of 225 kg, what is the maximum number of dumbbells
    6·1 answer
  • A 0.0220 kg bullet moving horizontally at 400 m/s embeds itself into an initially stationary 0.500 kg block. (a) What is their v
    13·1 answer
  • An escalator is used to move 25 passengers every minute from the first floor of a department store to the second. The second flo
    14·2 answers
  • The surface tension of isopropyl alcohol in air has a value of 22.39 units and the surface tension of water in air is 72.86 unit
    10·1 answer
  • Which note-taking method did Samantha use?
    13·2 answers
  • Where does pressure come from?
    5·2 answers
  • How much magnetic potential energy is dissipated when the magnetic field is quenched in this way?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!