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an underwater explosion is detected by sonar on a ship 45 s before it is heard on the deck. if sound travels at 4000ft/s in water and 1500 ft/s in air how far is the ship from the explosion

Hellboy asked Jun 19, 2024

by Hellboy

6.1k points

1 answer

4 votes

168k views

The length of the parallel sides of a trapezium are in the ratio 3: 2 and the distance between them is 10 cm. If the area of the trapezium is 325 cm², find the length of the parallel sides. A. a = 30 ,

Coldstar asked Jun 19, 2024

by Coldstar

8.4k points

1 answer

4 votes

88.4k views

A 72.7 kg person stands on the surface of the earth. how much is the moon pulling on this person? the mass of the moon is 7.35 × 1022 kg, and the semi-major axis of the § moon's orbit is 3.844 x 108 how

Rob Bradford asked Jun 19, 2024

by Rob Bradford

7.1k points

1 answer

2 votes

206k views

A car undergoing uniform acceleration travels 100 meters from a standing start in a given period of time. If the time were increased by a factor of four, calculate the displacement. a. 400 m b. 1600 m

IUrii asked Jun 19, 2024

by IUrii

8.0k points

1 answer

3 votes

190k views

When catching, giving with the ball and bringing it into the body is called a. tracking b. absorption c. force d. velocity

George Hilliard asked Jun 19, 2024

by George Hilliard

7.5k points

1 answer

2 votes

137k views

Cana microwave wave have a wavelength of 1 centimiter

Bossylobster asked Jun 19, 2024

by Bossylobster

6.8k points

1 answer

0 votes

66.2k views

A software engineer conducts a threat intelligence assessment after observing a breach. which attribute focuses on the speed at which threat data is collected and disseminated to ensure it is up-to-date

OBu asked Jun 19, 2024

by OBu

8.1k points

1 answer

3 votes

14.2k views

A single phase transmission line having an impedance of 8 60°ohm supplies a load of 80 Amperes at a voltage of 87 KV at a power factor of 0.8 lagging. Calculate the voltage on the sending side and

Rob Schmuecker asked Jun 19, 2024

by Rob Schmuecker

7.3k points

1 answer

2 votes

211k views

Two balls with masses of 1.90 kg and 6.40 kg travel toward each other at speeds of 13.0 m/s and 3.80 m/s, respectively. If the balls have a head-on inelastic collision and the 1.90-kilogram ball recoils

Michael Mangold asked Jun 19, 2024

by Michael Mangold

7.5k points

1 answer

5 votes

204k views

a cylinder of nitrogen and a cylinder of neon are at the same temperature and pressure. the mean free path of a nitrogen molecule is 130 nm What is the mean free path of a neon atom?

Vtsamis asked Jun 19, 2024

by Vtsamis

7.3k points

2 answers

1 vote

215k views

See how a block and tackle system can increase your mechanical advantage. You will need two broomsticks, a rope, and two helpers. A. Give each helper a broom stick and have them stand facing each other

Yakalent asked Jun 19, 2024

by Yakalent

7.4k points

1 answer

3 votes

102k views

A 40 kg child sits on a see-saw 3 m away from the pivot. Where should a 30 kg child sit such that the system is in rotational equilibrium? a. 3. 4 m b. 3 m c. 3.5 m d. 2.5 m

Rizki asked Jun 19, 2024

by Rizki

6.5k points

1 answer

2 votes

94.0k views

"An ball with a mass of M is launched off of a building of height h at an angle of Θ. The highest point in the ball’s trajectory is Point P, and Point Q is level with the launch height. Ignoring all effects

Lytigas asked Jun 19, 2024

by Lytigas

7.1k points

2 answers

4 votes

182k views

What direction does the x axis go?

Kinghfb asked Jun 19, 2024

by Kinghfb

7.6k points

2 answers

4 votes

202k views

A ball of unknown mass m is tossed straight up with initial speed = 2.4 m/s. At the moment it is released, the ball is a height ℎ = 0.60 m above a spring-mounted platform, as shown in the figure. The ball

Thanasissdr asked Jun 19, 2024

by Thanasissdr

7.2k points

1 answer

5 votes

212k views

Pablo lifted a bag of flour 0.8m to a table using a force of 20N. How much work did Pablo do on the bag of flour? a. 16 J (joules) b. 25 J (joules) c. 0.04 J (joules) d. 0.025 J (joules)

Philip Stratford asked Jun 19, 2024

by Philip Stratford

9.0k points

1 answer

0 votes

24.3k views

What is the kinetic energy in joules of a 910-kg automobile traveling at 87 km/h?

Shubster asked Jun 19, 2024

by Shubster

7.4k points

1 answer

4 votes

16.0k views

Given are four cylinders: \# 1,#2,#3 and \# 4. The relief valve is set for 3,000 psi. A 15 GPM constant displacement pump is used. A solenoid controlled, hydraulic pilot operated, tandem center, 3 position,

Lebby asked Jun 19, 2024

by Lebby

7.4k points

1 answer

5 votes

156k views

Suppose there are two independent economic factors, M1 and M2. The risk-free rate is 6%, and all stocks have independent firm-specific components with a standard deviation of 54%. Portfolios A and B are

VDarricau asked Jun 19, 2024

by VDarricau

6.6k points

1 answer

3 votes

16.3k views

If when you boil a liquid it turns into a gas, then how come when you boil an egg it turns into a solid

Evonne asked Jun 19, 2024

by Evonne

7.4k points

1 answer

1 vote

150k views

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