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nasty-shy [4]
4 years ago
11

NEED HELP ASAP

Physics
1 answer:
raketka [301]4 years ago
7 0

Answer:

50km/h

Explanation:

my teatcher said that

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How do you do work and power
dybincka [34]
Power is the work divided by time
4 0
4 years ago
Calcula la fuerza que tiene que realizar el brazo sobre el punto medio del mango de la pala para levantar la tierra situada en l
KiRa [710]

Explanation:

1- El primer paso para calcular la fuerza del brazo en el punto medio de la excavadora para levantar la tierra, es averiguar dónde está el fulcro, que en este caso está en las manos.

2- El segundo paso es calcular el brazo de potencia, al que llamaremos Bp, y el brazo de resistencia, que estará representado por Br.

Si Bp es igual a la distancia de la potencia al fulcro, Bp = 60cm

y si Br es igual a la distancia desde la resistencia al fulcro, entonces

Br = 40 + 60 = 100cm

3- Ahora aplicamos la fórmula de la ley de la palanca. Nosotros

piden que se aplique la fuerza en manos de

en el medio, es decir, la potencia P. La fórmula sería:

Y en el tercer paso, aplicaremos la fórmula de la ley de la palanca, que es:

P = R x Br / Bp

P = 8 x 100/60

P = 13,33 Kgf

<u>Entonces la respuesta final es:</u>

P = 13,33 Kgf

7 0
3 years ago
The table below shows data of sprints of animals that traveled 75 meters. At each distance marker, the animals' times were recor
Sophie [7]

Answer:

i think its animal 4

Explanation:

7 0
4 years ago
Read 2 more answers
The average distance of the earth from the sun is about 1.5 × 10^8 km. Assume that the earth’s orbit around the sun is circular
Marina86 [1]

Answer:

Explanation:

Distance between sun and earth will act as radius of circular path

R = 1.5 X 10¹¹ m

angular velocity of the earth

ω = 2π / T

= 2 X 3.14 / ( 365 X 24 X 60 X 60 )

= 1.99 X 10⁻⁷ radian / s

velocity v = ω R

=  1.99 X 10⁻⁷ X 1.5 X 10¹¹

= 2.985 X 10⁴ m /s

= 29.85 km/s

29.85 x 60 x 60 km/h

= 107460 km/h

107460/1.6 mile / h

= 67162.5 mile /h

b ) Angle moved in 12 months

= 360 degree

angle moved in 4 months

= 360 / 3

= 120 degree

c )  Circumference of the orbit

= 2 x 3.14 x 1.5 x 10⁸ km

9.42 x 10⁸ km

required distance will be 1/3 rd of circumference

= 9.42 / 3 x 10⁸ km

= 3.14 x 10⁸ km

7 0
3 years ago
Suzie lavtaski has reached the end of the ski slope and abruptly slows down from 35.0 m/s to 4.5 m/s in 1.15 seconds. Determine
Naddik [55]
First, write down the variables you know the values of; 
s=?
u=35m/s
v=4.5m/2
t=1.15 
a=?

s=(u+v/2)t 
s=(35+4.5/2)(1.15) 
s= 22.7125 m 

a=change in velocity/t 
a=4.5-35/1.15 
a=-26.52 ms^-2 

Hope I helped :) 
5 0
3 years ago
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