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3 years ago

The SI units for force are what?

Physics

1 answer:

arsen [322]3 years ago

6 0

Answer:

The SI unit of force is Newton.

Explanation:

Newton is denoted by N.

Force can be defined as the pull or push which change or try to change the state of a body from motion to rest or rest to motion in a straight line.

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3. How do electric and magnetic forces act on different object?

zloy xaker [14]

The answer is C I believe

8 0

4 years ago

How much heat must be removed from 200 pounds of blanched vegetables at 189 degrees F to freeze them to a temperature of 22 degr

Virty [35]

To solve this problem it is necessary to apply the concepts related to heat exchange in the vegetable and water.

By definition the exchange of heat is given by

$Q =mc\Delta T$

where,

m = mass

c = specific heat

$\Delta T$ = Change in temperature

Therefore the total heat exchange is given as

$\Delta Q = Q_w+Q_v$

$\Delta Q = m_wc_w(T_i-T_f)+m_vc_v(T_i-T_f)$

Our values are given as,

Total mass is $M_T$ = 200lb ,however the mass of solid vegetable and water is given as,

$m_v= 0.4*200lb = 80lb$

$m_w=0.6*200lb=120lb$

$T_i = 183\°F\\T_f = 22\°F\\c_w = 1Btu/lbF\\c_v = 0.24Btu/lbF$

Replacing at our equation we have,

$\Delta Q = m_wc_w(T_i-T_f)+m_vc_v(T_i-T_f)$

$\Delta Q = (120)(1)(183-22)+(80)(0.24)(183-22)$

$\Delta Q = 22411.2Btu$

Therefore the heat removed is 22411.2 Btu

6 0

3 years ago

The total thermal energy needed to raise the temperature of this ice cube to 0.0 °C and completely melt the ice cube is 5848 J

USPshnik [31]

Answer:

0.018kg

Explanation:

Q=mlf

m=?,Lf=334000J/kg,Q=5848J

5848=mx334000

5848=334000m

divide both sides by 334000

334000m/334000=5848/334000

m=0.018kg

4 0

3 years ago

how Long will it take a plane flying north from Miami to reach New York City 1800 km away if the average velocity of the plane i

alukav5142 [94]

Answer: 1.91 hours or 1 hour and 55 minutes

Procedure:

Average speed = distance / time

=> time = distance / average speed

=> distance = 1800 km / 940 km/h = 1.91 hours

0.91 hours * 60 min / hour = 54.9 min = 55 min

=> 1 hour and 55 min.

8 0

3 years ago

If Rebecca is traveling at 7 m/s east for 1 hour how much is Rebecca displaced

Mekhanik [1.2K]

Answer:

25.2 km east

Explanation:

The relationship between velocity and displacement is given by:

$v=\frac{d}{t}$

where

v is the velocity

d is the displacement

t is the time

In this problem, we have:

$v=7 m/s$ east is Rebecca's velocity

$t=1 h=60 min=3600 s$ is the time taken

Re-arranging the equation, we can find Rebecca's displacement:

$d=vt=(7 m/s)(3600 s)=25,200 m=25.2 km$

and the direction is same as velocity (east)

3 0

3 years ago