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Mumz [18]
3 years ago
11

A truck is driving north at 35 miles per hour and passes a car going south at 40 miles per hour. What is the speed of the car fr

om the truck driver’s frame of reference?
Physics
2 answers:
inna [77]3 years ago
7 0

Answer:

70

Explanation:

right...

Citrus2011 [14]3 years ago
7 0

Answer:

120

………………..........................................

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Kyle is flying a helicopter and is rising at 5.0m/s when he releases the bag. After 2.0s
ch4aika [34]
1) v=u+gt = -5 +10*2=15 m/s
2) r=ut+gt^2/2=-5*2+10*2^2/2=-10+20=10m
3) r of heli= vt =5*2=10m
So 10m by bag from answer number 2 plus additional 10m by helicopter equals 20m
5 0
3 years ago
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Which of the following is the best definition of work?
wel
A. something that happens when a force is applied to an object and its moved

(however all 3 answers are arguebly correct)
5 0
3 years ago
Calculate the electric field (in V/m) between two parallel plates connected to a 45 V battery if the plates are separated by a)
Sonja [21]

Answer:

Explanation:

Given

Voltage of battery V=45\ V

electric field(E) is given by  

E=|-\frac{dV}{dx}|

i.e. Change in Potential over a distance x

(a)When Plate are separated by 3 cm apart

E=|\frac{45}{3\times 10^{-2}}|

E=1500\ V/m

(b)When Plates are 5 cm apart

E=|-\frac{45}{5\times 10^{-2}}|

E=900\ V/m

Force on electron is given by

F=charge\times Electric\ Field

F=q\times E

For case a

F=1.6\times 10^{-19}\times 1500

F=24\times 10^{-17}\ N

(b)F=1.6\times 10^{-19}\times 900=14.4\times 10^{-17}\ N

6 0
3 years ago
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Write the following number in scientific notation: 658000
Mice21 [21]
6.58 x 105 is the answer
8 0
3 years ago
Imagine that someone is sitting down to enjoy a cup of coffee or hot chocolate. Use your experiences to describe how heat flows
Reika [66]

The heat flows into my body and I start with a warming feeling going down my throat as it starts there I get this warm feeling and I break out in a coldsweat from consuming a warm drink a cold drink will help cool me down :

Explanation:

If drink warm will make u warm drinking cool will make u cool down faster

8 0
3 years ago
Read 2 more answers
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