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NemiM [27]
2 years ago
14

Please help I'm stuck on this question ​

Physics
1 answer:
Afina-wow [57]2 years ago
8 0

Answer:

increase

decrease

Explanation:

using formula

Vt=mg/6πηr

so if m increases V increases

r is the denominator so if r increases V decreases

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A particular grocery bag can withstand 40 N of tension force before it rips. If a shopper places 3 kg of food in the bag, what i
snow_lady [41]

Answer;

    = 13.33 m/s²

Solution;

From the second Newton's law of motion;

F= ma

F is the force = 40 N

M is the mass = 3 kg

a is the acceleration;

40 = 3 × a

a = 40/3

    = 13.33 m/s²

Hence; the maximum acceleration the bag can withstand before ripping is 13.33 m/s²

8 0
3 years ago
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Suppose that an electron and a positron collide head-on. Both have kinetic energy of 1.64 MeV and rest energy of 0.511 MeV. They
trasher [3.6K]

The electron and positron collide and annihilate each other, converting their total energy (sum of kinetic and rest energy) into energy carried by two photons:

2(1.64MeV  + 0.511MeV) = 2E_{photon}

E_{photon} = 1.64MeV  + 0.511MeV

E_{photon} = 2.15MeV

3 0
3 years ago
A hiker, caught in a rainstorm might absorb 1 liter of water in her clothing. if it is windy so that this amount of water is eva
NeTakaya

Water evaporates at 100⁰C

So change in temperature = 100-20 = 80⁰C

Amount of water to be evaporated = 1 liter = 1L*1kg/liter = 1 kg

Specific heat of water is 1 calorie/gram ⁰C = 4.186 joule/gram =4186 J/kg

So heat required E = mcΔT = 1 * 4186 *80= 334880 J =334.88 kJ

So amount of heat require to evaporate water = 334.88 kJ

4 0
3 years ago
PLEASEE GUYS HELP I BEG YOU
raketka [301]
0.520155077123917 i believe?? hope this helps
7 0
3 years ago
Two teams are playing tug-of-war. Team A, on the left, is pulling on the rope with an effort of 5000 N. If the rope is moving at
Mashutka [201]

Explanation:

If Team A is on the left, B is on the right

if the force is constant, it means that the effort applied is equal.

So Team B is pulling 5000N to the right.

6 0
3 years ago
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