All categories

3 years ago

4. A 180 kg sumo wrestler on roller skates, rolling at 5 m/s to the left, collides elastically with

Physics

1 answer:

Goryan [66]3 years ago

4 0

Answer:

m1u1+m2u2=m1v1+m2v2

Explanation:

m1=180

m2=215

u1=5

u2=3.5

v1=2

v2=?

use the above formula

You might be interested in

What is the relationship between thermal energy and temperature?

poizon [28]

As the air becomes warmer, heat is transferred between molecules and kineticenergy is created which produces thermal energy. As the molecules move faster to transfer heat, the temperature also increases.

6 0

3 years ago

lines of latitude a. run from north to south b.start greenwitch,greenland c. are parallel to the equator d.indicate magnetic dec

kenny6666 [7]

The answer is C.
they run east to west which makes them parallel to the equator and they measure distances north and south.
I hope this helps.

4 0

4 years ago

Read 2 more answers

The specific heat of soil is 0.20 kcal/kg*C and the specific heat of water is 1.00 kcal/kg*C. This means that if 1 kg of soil an

stiv31 [10]

Answer: The soil will be $4\°C$ warmer than the water.

Explanation:

The heat (thermal energy) absorbed can be found using the following equation:

$Q=m.C.\Delta T$

Where:

$Q$ is the heat

$m$ is the mass of the element

$C$ is the specific heat capacity of the material.

$\Delta T$ is the variation in temperature

In the case of soil we have:

$Q_{soil}=m_{soil}.C_{soil}.\Delta T_{soil}$ (1)

Where:

$Q_{soil}=1 kcal$

$m_{soil}=1 kg$

$C_{soil}=0.2 kcal/kg \°C$

$\Delta T_{soil}$

In the case of water we have:

$Q_{water}=m_{water}.C_{water}.\Delta T_{water}$ (2)

Where:

$Q_{water}=1 kcal$

$m_{water}=1 kg$

$C_{water}=1 kcal/kg \°C$

$\Delta T_{water}$

Isolating $\Delta T$ from both equations:

$\Delta T_{soil}=\frac{Q_{soil}}{m_{soil}.C_{soil}}$ (3)

$\Delta T_{soil}=\frac{1 kcal}{1 kg(0.2 kcal/kg \°C)}$

$\Delta T_{soil}=5\°C$ (4)

$\Delta T_{water}=\frac{Q_{water}}{m_{water}.C_{water}}$ (5)

$\Delta T_{water}=\frac{1 kcal}{1 kg(1 kcal/kg \°C)}$

$\Delta T_{water}=1\°C$ (6)

Comparing (4) and (6) we can find the soil will be $4\°C$ warmer than the water.

8 0

4 years ago

6. What could you do to increase the strengths of your electromagnet?

slamgirl [31]

Answer: Increase Winding Count

Reduce Resistance

Increase Voltage

Switch From AC to DC

Explanation: HOPE THIS HELPS!!! ^w^

8 0

2 years ago

How many neutrons are needed to initiate the fission reaction shown?

nalin [4]

Answer: One neutron

Explanation:

one neutron 1/0n

Sum up the mass numbers on the right 99 + 135 + 2 = 236.

The sum of the mass numbers on the left should equal 236. 235 + 1 = 236

4 0

4 years ago