Ask question

Ask question

All categories

3 years ago

10

A bee flies 25 meters north of the hive, then 10 meters east, 5 meters west, and 10 meters south. How far north and east of the

hive is the bee now? Explain how you calculated your answer.

1 answer:

tensa zangetsu [6.8K]3 years ago

4 0

25 meters north = 25 meters north

10 meters east = 10 meters east

5 meters west = -5 meters east

10 meters south = -10 meters north

Add up all the north components: (25 - 10) = <em>15 meters north</em> of the hive

Add up all the east components: (10 - 5) =<em> 5 meters east</em> of the hive

You might be interested in

By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows, with m1 = 12.1 kg and

puteri [66]

Answer:

14.8 kg

Explanation:

We are given that

$m_1=43.7 kg$

$m_2=12.1 kg$

$g=9.8 m/s^2$

$a=\frac{1}{2}(9.8)=4.9 m/s^2$

We have to find the mass of the pulley.

According to question

$T_2-m_2 g=m_2 a$

$T_2=m_2a+m_2g=m_2(a+g)=12.1(9.8+4.9)=177.87 N$

$T_1=m_1(g-a)=43.7(9.8-4.9)=214.13 N$

Moment of inertia of pulley= $I=\frac{1}{2}Mr^2$

$(T_2-T_1)r=I(-\alpha)=\frac{1}{2}Mr^2(\frac{-a}{r})=\frac{1}{2}Mr(-4.9)$

Where $\alpha=\frac{a}{r}$

$(177.87-214.13)=-\frac{1}{2}(4.9)M$

$-36.26=-\frac{1}{2}(4.9)M$

$M=\frac{36.26\times 2}{4.9}=14.8 kg$

Hence, the mass of the pulley=14.8 kg

6 0

3 years ago

Definition Electromagnetic Wave

lara31 [8.8K]

Explanation:

Definition of electromagnetic wave. : one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

5 0

4 years ago

A 33.0 g iron rod, initially at 22.7 ∘c, is submerged into an unknown mass of water at 63.3 ∘c, in an insulated container. the f

professor190 [17]

When the iron and the water reach thermal equilibrium, they have same temperature, $T=58.5^{\circ}C$ .
We can consider this as an isolated system, so the heat released by the water is equal to the heat absorbed by the iron.

The hear released by the water is:
$Q_w =m_w C_{sw} \Delta T_w$
where $m_w$ is the water mass, $C_{sw}=4.186 J/(g^{\circ}C)$ is the specific heat of the water, and $\Delta T_w = 63.6^{\circ}-58.5^{\circ}=5.1^{\circ}C$ is the variation of temperature of the water.

Similarly, the heat absorbed by the iron is:
$Q_i = m_i C_{si} \Delta T_i$
where $m_i = 33.0 g$ is the iron mass, $C_{si}=0.444 J/(g^{\circ}C)$ is the iron specific heat, and $\Delta T_i = 58.5^{\circ}-22.7^{\circ}=35.8^{\circ}C$ is the variation of temperature of the iron.

Writing $Q_w=Q_i$ and replacing the numbers, we can solve to find mw, the mass of the water:
$m_w= \frac{m_i C_{si} \Delta T_i}{C_{sw} \Delta T_w} =24.6 g$

4 0

3 years ago

During the sudden impact of a car accident, a person's neck can experience abnormal forces, resulting in an injury commonly know

iVinArrow [24]

Answer:

C) Rear

Explanation:

For better understanding, let me explain first what actually is the Whiplash injury. It usually occurs in the accidents related to vehicles and cause injury in the neck. It happens because of the very forceful, rapid movement of head and neck forward and backward. So unfortunately if there is a sudden impact of car from the rear and if it's velocity changes from 10 to 15 km/h (as the studies show) it will results in the whiplash injuries. So the correct option here is the third one "<em>rear</em>".

8 0

3 years ago

What is the difference between speed and velocity ?

oee [108]

velocity describes speed with direction.

4 0

3 years ago