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Alik [6]
3 years ago
13

Atividade 1) A presença do campo magnético terrestre proporciona alguns efeitos interessantes. Dentre eles estão as auroras pola

res. Faça uma pesquisa e explique como esse fenômeno ocorre. Atividade 2 Utilizando a simulação mostrada na figura abaixo, aproxime o ímã da bússola em várias posições ao longo do plano. a) O que representam as pequenas agulhas ao redor do ímã? b) O que acontece com a agulha da bússola quando o ímã é movimentado ao seu redor? c) Marque a seleção "Mostrar medidor de campo". Movimente o medidor de campo O que você observa em relação ao campo magnético⃗ , quando o medidor de campo se aproxima do imã? c) Marque a caixa de seleção "planeta Terra". Como são mostradas as polaridades do ímã? Por que aparece dessa forma?
Physics
1 answer:
VLD [36.1K]3 years ago
7 0
The answer is 1 the first one is the only one that makes sense
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Tired of being chased by a jaguar, you set a trap. Hoping to drop it on the jaguar, you try to push a
Alenkasestr [34]

Answer: acceleration = 3.27m/s^2

Explanation:

Given that the

Mass M = 44kg

Angle Ø = 15 degree

Coefficient of friction ų = 0.7

Force F = 222N

F - Fr = ma ...... (1)

Where Fr = frictional force

Fr = ųN

N = normal reaction = mg

Fr = ųmgsinØ

Fr = 0.7 × 44 × 9.81 × sin 15

Fr = 78.2N

Substitutes Fr, F and M into equation one.

222 - 78.2 = 44a

143.79 = 44a

Make a the subject of formula

a = 143.79/44

Acceleration a = 3.27 m/s^2

6 0
4 years ago
3. While traveling in a car, why do cars that pass by appear to be moving slowly?
Evgesh-ka [11]
It is because of momentum. Velocity can change if an object changes direction since velocity depends on both the speed and direction
3 0
4 years ago
Read 2 more answers
The half-life of iodine-131 is 8 days. Chan Hee examines two samples of iodine-131. Sample 1: 10 g Sample 2: 20 g What can Chan
Illusion [34]
Chan Hee can expect to observe about the samples after 16 days is that three-fourths of each sample will have undergone radioactive decay. The best answer is letter B.
4 0
4 years ago
Please help me I need this today
Mumz [18]

Answer:

42km/h

Explanation:

Change in km/ Change in time

1.4 x 100

0.033 x100

140km/3.3

= 42.4242 --> 42km/h

<u>Brainliest Appreciated!</u>

4 0
3 years ago
If a car has an initial velocity of 20 m/s and accelerates at 2.0 m/s² for 100 m, what is its final velocity?
WINSTONCH [101]

Answer:

28.28 ms-1

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v² = u² + 2as

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v² = 800

v = 28.28 ms-1

8 0
3 years ago
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