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
WARRIOR [948]
3 years ago
6

Pls I need it fast , its for my homework and I can’t find it

Physics
1 answer:
frez [133]3 years ago
5 0

Answer:

first one is  series second one is paralle

Explanation:

You might be interested in
[1] The assembly starts from rest and reaches an angular speed of 150 rev/min under the action of a 20-N force T applied to the
ExtremeBDS [4]

Answer:

t = 5.89 s

Explanation:

To calculate the time, we need the radius of the pulley and the radius of the sphere which was not given in the question.

Let us assume that the radius of the pulley (r_p) = 0.4 m

Let the radius of the sphere (r) = 0.5 m

w = angular speed = 150 rev/min = (150 × 2π / 60) rad/s = 15.708 rad/s

Tension (T) = 20 N

mass (m) = 3 kg each

\int\limits^0_t {Tr_p} \, dt=H_2-H_1\\( Tr_p)t=4rm(rw)\\( Tr_p)t=4r^2mw

t = \frac{4r^2mw}{Tr_P}

Substituting values:

t = \frac{4r^2mw}{Tr_P}= \frac{4*(0.5)^2*3*15.708}{20*0.4}=5.89s

7 0
3 years ago
Read 2 more answers
What causes the movement of the crust that leads to volcanoes, mountains, and seafloor spreading?
Salsk061 [2.6K]

Answer:

B.convection currents in the mantle

Explanation:

4 0
2 years ago
How much heat is absorbed by a 450g gold block as energy from the sun causes its temperature to change from 27°C to 32°C? (Speci
kotegsom [21]

Answer:

Q = 1057.5 [cal]

Explanation:

In order to solve this problem, we must use the following equation of thermal energy.

Q=m*C_{p}*(T_{final}-T_{initial})

where:

Q = heat energy [cal]

Cp = specific heat = 0.47 [cal/g*°C]

T_final = final temperature = 32 [°C]

T_initial = initial temperature = 27 [°C]

m = mass of the substance = 450 [g]

Now replacing:

Q=450*0.47*(32-27)\\Q=1057.5[cal]

5 0
2 years ago
Nonrenewable energy resources do not include which of the following?
Tems11 [23]
Hydrogen fuel cells is the answer
8 0
3 years ago
Read 2 more answers
The phases of the moon occur because the moon revolves around the earth.<br><br> True<br><br> False
Ira Lisetskai [31]

Answer: True

Explanation:
The phases occur because the sun lights different parts of the moon as the moon revolves around the earth
7 0
3 years ago
Other questions:
  • Which gas is a greenhouse gas?<br><br> nitrogen<br> oxygen<br> carbon dioxide<br> hydrogen
    14·2 answers
  • The highest frequency radio waves are which type ?
    6·1 answer
  • A dog pulls on his leash with a 10-N force to the left. Identify the reaction force
    15·1 answer
  • Suppose that over a certain region of space the electrical potential V is given by the following equation. V(x, y, z) = 2x2 − 3x
    5·1 answer
  • wich statement is true about the law of conservation of energy for an object released from a certain height above the ground​
    10·1 answer
  • The human eye can change the shape of its crystalline lens, and thus modify the lens strength (a.k.a., lens power) of the eye in
    13·1 answer
  • Un coche que lleva una velocidad constante de 90 km/hora durante 2 horas ¿Cuánto espacio recorre?Si encuentra un obstáculo en la
    14·1 answer
  • 1. Faça as transformações:
    5·1 answer
  • A 15kg object strikes the ground with 2000J of kinetic energy after freely falling from rest. How far above the ground was the o
    8·1 answer
  • Two positive point charges are 4.9cm apart. If the electric potential energy is 70.0 μJ, what is the magnitude of the force betw
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!