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3 years ago

8

List down the types of centripetal force?

2 answers:

fomenos3 years ago

6 0

Answer: Just a few examples are the tension in the rope on a tether ball, the force of Earth's gravity on the Moon, friction between roller skates and a rink floor, a banked roadway's force on a car, and forces on the tube of a spinning centrifuge. Any net force causing uniform circular motion is called a centripetal force.

Archy [21]3 years ago

3 0

Answer:

roller skates and a rink floor, a banked roadway's force on a car, and forces on the tube of a spinning centrifuge

Explanation:

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How many grams of coffee must evaporate from 350 g of coffee in a 100-g glass cup to cool the coffee from 95.0ºC to 45.0ºC? You

bagirrra123 [75]

Answer:

33 gm.

Explanation:

Heat required by coffee in evaporation = m L = m x 560 cals

Heat released by coffee in cooling = m c Δ T = 350 X 1 X 50 = 17500 cals

Heat released by glass cup = 100 x .2 x 50 = 1000 cals ( specific heat of glass is .2 cals per gram per k)

Total heat released = 18500 cals

Heat gained = heat lost

m x 560 = 18500

m = 33 gm.

7 0

3 years ago

A Goodyear blimp typically contains 5400 m³ of helium (He) at an absolute pressure of 1.10 × 10 5 1.10 × 10 5 Pa. The temperatur

Wewaii [24]

The concept related to this exercise to solve this problem is the ideal Gas law which establishes

$PV = nRT$

P= Pressure

V= Volume

n = Number of moles

R= Gas ideal Constant

T= Temperature

Our values are given as,

$V =5400m^3 \\P = 1.1*10^5Pa\\T = 295K \\M_m =4.0026g\\R = 8.3145J\cdot mol^{-1}K^{-1}\\$

From the ideal gas equation then we rearrange the equation to obtain the number of moles, then

$PV=nRT\\n = \frac{PV}{RT}\\n= 242174.43$

By definition the molecular mass (n) is expressed in terms of the mass and molecular weight therefore

$n = \frac{m}{M_m}$

$m = n*M_m$

$m = (242174.43)(4.0026)n$

$m = 969327.37$

$m = 968.327Kg$

Therefore the mass of the helium in the blimp is 968.327Kg

4 0

3 years ago

___________ used math to show that the planets move in ellipses, not perfect circles, around the Sun.

MariettaO [177]

I believe the answer is A

6 0

4 years ago

Read 2 more answers

How do you calculate the mass of an object accelerating at22.35m/s2 with a force of 120N

Arte-miy333 [17]

Answer:

The mass of object is calculated as 5.36 kg

Explanation:

The known terms to find the mass are:

acceleration of object (a) = 22.35 $m/s^{2}$

Force exerted (F) = 120N

mass of an object (m) = ?

From Newton's second law of motion;

F = ma

or, 120 = m × 22.35

or, m= $\frac{120}{22.35}$ kg

∴ m = 5.36 kg

3 0

3 years ago

Nuclear fusion is the combining of atomic nuclei to produce energy and

GenaCL600 [577]

Answer:

D) Radiation

Explanation:

Nuclear fusion is the combining of atomic nuclei to produce energy and radiation.

5 0

3 years ago