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4 years ago

QUIK!!!!!!!!!!!!Which is an activity that will build muscle endurance?

Physics

2 answers:

katen-ka-za [31]4 years ago

7 0

There is many activities you can do like running, sit-ups, push-ups, and squats.

Nimfa-mama [501]4 years ago

6 0

Running,jump rope, jumping jacks, push ups, sit ups, pulls ups, muscular endurance is about how long the excersize is done while muscular strength is when you work as hard as possible for short periods of time

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light of wavelength 587.5 nm illuminates a slit of width 0.75 mm. at what distance from the slit should a screen be placed if th

Liono4ka [1.6K]

1.085m

Explanation:

Using

a= lambda/sinစ

Sinစ= (587.5*10^-9) x 0.75*10^-3

= 0.000783

Sinစ=0.875*10^-3/d

0.000783= 0.875/d

d= 1.085m

6 0

3 years ago

A cosmic-ray electron moves at perpendicular to earth’s magnetic field at an altitude where the field strength is. what is the r

Harlamova29_29 [7]

4.266 m is the radius of the circular path the electron follows.

Given

Speed of electron (v) = 7.5 × 10⁶ m/s

Earth's Magnetic Field (B) = 1 × 10⁻⁵ T

We already know that

Mass of electron (m) = 9.1 × 10⁻³¹ kg

Charge on electron (q) = 1.6 × 10⁻¹⁹ C

According to the formula

Radius of circular path(r) = mass on electron × speed/ Charge × Magnetic field

Radius of circular path(r) = m × v/q × B

Put the values into the formula

r = 9.1 × 10⁻³¹ × 7.5 × 10⁶/ 1.6 × 10⁻¹⁹ × 10⁻⁵

On solving, we get

r = 4.266 m

Hence, 4.266 m is the radius of the circular path the electron follows.

Learn more about magnetic field here brainly.com/question/26257705

#SPJ4

6 0

2 years ago

Given the potential on a spherical shell of radius R to be V (R, θ) = V0 cos θ, calculate V (r, θ) both inside and outside the s

avanturin [10]

Answer:

not sure

Explanation:

5 0

3 years ago

DO NOT ANSWER IF YOU DONT KNOW!! what propeller design gives off the most air? a photo would be helpful. will give brainliest!!

IRISSAK [1]

Answer:

I would use a propeller like the first or second just from my experience. Just play around with the different ones and see which one works best for you.Don't make the propeller too thick or thin or else it may not work.

Explanation:

Have a great day! Good luck!

4 0

3 years ago

What is the correct definition of opinion polls? Question 2 options:

Ainat [17]

Answer:

i think the answer is D. surveys that ask people questions about specific topics, issues, or individuals

plz mark me as brainliest if this helped :)

5 0

3 years ago