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The half-life of iodine-131 is 8.07 days. If 0.25 g are left after 40.35 days, how many gramswere in the original sample?

Aneeq Azam Khan asked Jun 24, 2023

by Aneeq Azam Khan

6.4k points

2 answers

5 votes

86.6k views

Which is NOT a negative consequence of clearing land during deforestation? PLEASE

Lamya asked Jun 24, 2023

by Lamya

5.6k points

1 answer

1 vote

211k views

A results force of 25newtons acts on a mass of 0.50kilogram starting from rest .find acceleretion in m/s2 , the final velocity after 20seconds, the distance moved in m

Greg Michalec asked Jun 24, 2023

by Greg Michalec

5.7k points

1 answer

6 votes

89.0k views

1.)A pistol that fires a signal flare gives it an initial velocity (muzzle velocity) of 125m/s at an angle of 55.0 degree above the horizontal.You can ignore air resistance.Find the flare's maximum height

Kingdaro asked Jun 24, 2023

by Kingdaro

5.6k points

1 answer

2 votes

6.1k views

If you travel for three hours at a speed of 30 km/h, how far will you go?

MariusLAN asked Jun 24, 2023

by MariusLAN

6.0k points

1 answer

1 vote

160k views

4. A bottle is filled with 2 kg of olive oil which has a density of 0.9250 g/cm^3 What is the volume of the olive oil to the nearest cm³?

He asked Jun 24, 2023

by He

6.6k points

1 answer

0 votes

16.8k views

Each set of protons and electrons represents a different atom. Place theatoms in order of their overall charge. Order them from most positive to mostnegative.1 30 protons, 26 electrons11 17 protons, 10

Andy A asked Jun 24, 2023

by Andy A

5.9k points

1 answer

0 votes

88.3k views

A car must cover a distance of 300 km in 3 hours. However, for the first 2 hours it only travels 150 km. At what speed must it travel for the rest of the distance in order to complete the journey on time?

Eric Baker asked Jun 24, 2023

by Eric Baker

5.6k points

1 answer

1 vote

36.9k views

when a car driver reached the crest of a hill, she saw the stop light turn red and slammed on the brakes. the car slowed down as it moved to the bottom of the hill. is the KE and PE increasing, decreasing,

Kypros asked Jun 24, 2023

by Kypros

5.5k points

1 answer

5 votes

140k views

19. The speed of sound is 343 m/s. If the wavelength is 15cm, find the frequency.

Chris Betti asked Jun 24, 2023

by Chris Betti

5.9k points

1 answer

0 votes

233k views

A student drops a crumpled piece of paper into their trash bin by their desk. They then drop a piece of paper folded in half into the trash bin from the same height. Which paper fell faster? How do you

George Burdell asked Jun 24, 2023

by George Burdell

6.1k points

1 answer

21 votes

69.3k views

The magnetic field at point P is zero. Findthe distance, r2, from P to the second wire,1₂.I₁ = 4.32 A P------0.831 m1₂ = 7.50 Ar2r₂ = [?] m

Jeyamahesan asked Jun 24, 2023

by Jeyamahesan

6.4k points

1 answer

1 vote

172k views

A man traveled from town x from 6pm to 5: 30pm. If the travelled for 100 per hour . Calculate distance

Samda asked Jun 24, 2023

by Samda

5.7k points

1 answer

0 votes

167k views

What is Kepler's laws of planetary motion?

Jaredwoodard asked Jun 24, 2023

by Jaredwoodard

5.8k points

1 answer

0 votes

34.8k views

V=I/R correctly expresses the relationship between voltage, current, and resistance. True or False?

Dloeda asked Jun 24, 2023

by Dloeda

6.0k points

2 answers

8 votes

52.9k views

A car is driving at constant speed down the road. The mass of the car is 1350 kg and the coefficient of rolling friction is 0.18? How much engine force is needed to keep the car moving?

Recurseuntilfor asked Jun 24, 2023

by Recurseuntilfor

6.0k points

1 answer

20 votes

168k views

Several planets in our solar system have a magnetosphere. Describe what is required, in general, for a magnetosphere to exist (not just Earth). Also comment on what you see as the impact to us if we had

Tulkkas asked Jun 24, 2023

by Tulkkas

6.0k points

1 answer

1 vote

1.8k views

Which of the following is NOT an example of good static flexibility? A. doing and holding a split B. running a mile in six minutes C. holding a ballet position for six minutes D. crossing your ankles behind

Dragonmnl asked Jun 24, 2023

by Dragonmnl

6.7k points

2 answers

7 votes

32.3k views

10. The force with which one thing hits another or with which two objects collide is a. Impact force b. Motion force c. External force d. Internal force

DRendar asked Jun 24, 2023

by DRendar

5.4k points

1 answer

14 votes

31.1k views

Notes: Use 9.8 m/s 2 for the acceleration due to gravity.What is the weight in Newtons of a 250-gram box of breakfast cereal?

Armen Markossyan asked Jun 24, 2023

by Armen Markossyan

5.8k points

1 answer

4 votes

230k views

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