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
qwelly [4]
3 years ago
6

Please help easy 8th grade question

Physics
1 answer:
Tamiku [17]3 years ago
7 0

Answer:

whats the question?

Explanation:

You might be interested in
The "Giant Swing" at a county fair consists of a vertical central shaft with a number of horizontal arms attached at its upper e
Mashcka [7]

Answer:

Explanation:

When the central shaft rotates , the seat along with passenger also rotates . Their rotation requires a centripetal force of mw²R where m is mass of the passenger and w is the angular velocity and R is radius of the circle in which the passenger rotates.

This force is provided by a component of   T , the tension in the rope from which the passenger hangs . If θ be the angle the rope makes with horizontal ,

T cos θ will provide the centripetal force . So

Tcosθ = mw²R

Tsinθ component will balance the weight .

Tsinθ = mg

Dividing the two equation

Tanθ = \frac{g}{\omega^2R}

Hence for a given w , θ depends upon g or weight .

8 0
3 years ago
Read 2 more answers
A styrofoam container used as a picnic cooler contains a block of ice at 0°C. If 325 g of ice melts in 1 hour, how much heat ene
Sauron [17]

Answer:

30.0625 W

Explanation:

325 g/h   x    (1h x 1kg)/(3600s x 1000g)   x   3,33 x 10^5 J/Kg = 30.0625 J/Kg = 30.0625 W

8 0
3 years ago
A boat, whose speed in still water is 8.0 m/s, crosses a river with a current of 6.0 m/s. If the boat heads perpendicular to the
kirill [66]

Answer: D

Rs = 10.0 m/s

The speed of the boat relative to an observer standing on the shore as it crosses the river is 10.0m/s

Explanation:

Since the boat is moving perpendicular to the current of the river, the speed of the boat has two components.

i. 8.0m/s in the direction perpendicular to the current

ii. 6.0m/s in the direction of the current.

So, the resultant speed can be derived by using the equation;

Rs = √(Rx^2 + Ry^2)

Taking

Ry = 8.0m/s

Rx = 6.0m/s

Substituting into the equation, we have;

Rs = √(6.0^2 + 8.0^2)

Rs = √(36+64) = √100

Rs = 10.0 m/s

The speed of the boat relative to an observer standing on the shore as it crosses the river is 10.0m/s

3 0
3 years ago
Read 2 more answers
What are the two types of precession?
Elena L [17]

Answer:

correct answer is D

Explanation:

answer is perihelion and aphelion

3 0
1 year ago
The relationship between m2,cm2,mm2 and km2​
Tema [17]

Answer:

m2

Explanation:

I just knowyyysydyyyyyyyýdydysyydysysydydhdhhdhdhdhxhchxhhxhc

4 0
2 years ago
Read 2 more answers
Other questions:
  • A gas sample occupies 4.2 L at a pressure of 101 kPa. What volume will it occupy if the pressure is increased to 235 kPa?
    7·2 answers
  • A 15.7-g aluminum block is warmed to 53.2 °c and plunged into an insulated beaker containing 32.5 g of water initially at 24.5 °
    13·2 answers
  • What is the formula for calculating the force and acceleration of an object?{physical science}:)
    8·1 answer
  • Where would a boat produce the highest concentration of carbon monoxide?
    13·1 answer
  • For years, the tallest tower in the United States was the Phoenix Shot Tower in Baltimore, Maryland. The shot tower was used fro
    5·1 answer
  • In a college homecoming competition, eighteen students lift a sports car. While holding the car off the ground, each student exe
    14·1 answer
  • # A cheetah can start from rest and attain the velocity 72km/h in 2 seconds. Calculate the acceleration of cheetah
    11·1 answer
  • Que fracción de luz que llega directa a una lamina de vidrio se refleja en la primera superficie?
    6·1 answer
  • A girl rides her scooter to school, a total distance of 4.5km. She has to slow down twice to cross busy streets, but overall the
    7·2 answers
  • Find the mass of a football player who has 1200 N of force and has an acceleration of 1.5 m/s2 ?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!