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Irina-Kira [14]
2 years ago
13

NUMBER 8. NOWWWWWWWW

Physics
1 answer:
ss7ja [257]2 years ago
7 0

Torque =  r x F

|F| =  mg =  60 * 10 N = 600 N ( assuming g ~ 10m/s^2)

distance of fulcrum = torque / Force = 90/600 m = .15 m.

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PLEASE HELPPPPP!!!! :)
GuDViN [60]

Answer:

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

4 0
2 years ago
Which measurements are equal to 321 decimeters
vlabodo [156]
You are currently converting Distance and Length units from Centimeters to Feet 321 Centimeters (cm) = 10.5315 Feet (ft) This is a hard one but see if this helps if not let me now and i can try again..
7 0
3 years ago
A thermometer containing 0.10 g of mercury is cooled from 15 degrees celsius to 8.5 degrees celcius. How much energy left the me
loris [4]

To solve this exercise we will use the concept related to heat loss which is mathematically given as

Q = mC_p \Delta T

Where,

m = mass

C_p= Specific Heat

\Delta T = Change in temperature

Replacing with our values we have that

m = 0.1g

C_p = 139J/Kg\cdot K \rightarrow Specific heat of mercury

\Delta T = 8.5\°C-15\°C = -6.5\°C \Rightarrow -6.5K

Replacing

Q = (0.1*10^3)(138)(-6.5)\\Q = -0.09J

Therefore the heat lost by mercury is 0.09J

5 0
3 years ago
The space shuttle is descending through the earth's atmosphere. How is the force of gravity affected?
polet [3.4K]
The answer would be C. It will decrease with descent. Hope this helps!
5 0
3 years ago
Read 2 more answers
Dave wishes to get produce from the store, which is a distance D- 2.2 km east of his house. Dave drives his bike to the store at
Neporo4naja [7]

Answer:

a) t_1=338.4615\ s

b) t=1386.0805\ s

c) t=23.1013\ min

d) d=4400\ m

e) Since Dave starts from house and finally returns to the house so displacement is zero.

Explanation:

Given:

  • distance between the house and the store, s=2.2\ km=2200\ m
  • speed of driving from house to store, v_1=-6.5\ m.s^{-1}
  • speed of driving back from store to house, v_2=2.1\ m.s^{-1}

Since the store is located towards east from his house and the velocity in this direction is taken negative and contrary to this the velocity in the west direction is taken positive.

a)

time taken in reaching the store:

t_1=\frac{s}{v_1}

t_1=\frac{-2200}{-6.5}

t_1=338.4615\ s

b)

Now the time taken in returning form the store:

t_2=\frac{s}{v_2}

t_2=\frac{2200}{2.1}

t_2=1047.6190\ s

therefore total time taken by the trip:

t=t_1+t_2

t=338.4615+1047.6190

t=1386.0805\ s

c)

the time taken by the trip in minutes:

t=\frac{1386.0805}{60}

t=23.1013\ min

d)

distance travelled in the whole trip:

d=2\times s

d=2\times 2200

d=4400\ m

e)

Since Dave starts from house and finally returns to the house so displacement is zero.

3 0
3 years ago
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