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sergey [27]
2 years ago
6

Jnkmj jnmmjnkmjnkmjmsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssc mmmmmmmmmmmmmmmmmmmm

Physics
2 answers:
alex41 [277]2 years ago
8 0

Jecbfyicrvdbicbicnrhecbydhbfc

Hehdbeeufhrbfuibcdsjibvhisbcznchbvrjkvn? Kiffbcrrhhsdfvcbiajsbnfucjoansdzuijcndj!!!

Andrei [34K]2 years ago
5 0

Jnkmj jnmmjnkmjnkmjmsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssc mmmmmmmmmmmmmmmmmmmm

Jnkmj jnmmjnkmjnkmjmsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssc mmmmmmmmmmmmmmmmmmmm

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In the aerials competition in skiing, the competitors speed down a ramp that slopes sharply upward at the end. The sharp upward
11111nata11111 [884]

Answer:

u = 11.6 m/s

Explanation:

The end of a launch ramp is directed 63° above the horizontal. A skier attains a height of 10.9 m above the end of the ramp.

Maximum height, H = 10.9

Let v is the launch speed of the skier. The maximum height attained by the projectile is given by :

H=\dfrac{u^2\ sin^2\theta}{g}

10.9=\dfrac{u^2\ sin^2(63)}{9.8}

u = 11.6 m/s

So, the launch speed of the skier is 11.6 m/s. Hence, this is the required solution.

4 0
3 years ago
URGENT
Advocard [28]

Answer:

give \\ mass(m) = 1350kg  \\ acceleration(a) = 1ms {}^{ - 2}  \ \\ sln\ \\  from \: our \: formula \\  \: f = ma \\1350kg \times 1ms {}^{ - 2}  \\ f = 1350newton

the force you applied to your car =1350N

5 0
3 years ago
Steam at 100°C is condensed into a 38.0 g aluminum calorimeter cup containing 280 g of water at 25.0°C. Determine the amount of
KonstantinChe [14]

Answer:

7.2g

Explanation:

From the expression of latent heat of steam, we have

Heat supplied by steam = Heat gain water + Heat gain by calorimeter

mathematically,

m_{s}c_{w} \alpha _{w} + m_{s}l=m_{w}c_{w} \alpha _{w} +m_{c}c_{c} \alpha c_{c}

L=specific latent heat of water(steam)=2268J/g

c_{w}=specific heat capacity=4.2J/gK

c_{c}=specific heat capacity of calorimeter =0.9J/gk

m_{w}=280g

m_{c}=38g

α=change in temperature

\alpha _{c}=(40-25)=15

\alpha _{w}=(40-25)=15

\alpha _{s}=(100-40)=60

Note: the temperature of the calorimeter is the temperature of it content.

From the equation, we can make m_{s} the subject of formula

m_{s}=\frac{m_{w}c_{w} \alpha +m_{c}c_{c}\alpha}{c_{w}\alpha +l}

Hence

m_{s}=\frac{(280*4.2*15) +(38*0.9*15)}{(4.2*60) +2268} \\m_{s}=\frac{18153}{2520}\\ m_{s}=7.2g

Hence the amount of steam needed is 7.2g

6 0
2 years ago
All of the waves in the electromagnetic spectrum are _______ waves.
crimeas [40]
<span>All of the waves in the electromagnetic spectrum are transverse waves.</span>
5 0
3 years ago
Read 2 more answers
20 points!
MariettaO [177]
Do they give answer choices? or is it free write? i’ll help if you tell me!!
8 0
2 years ago
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