Ask question

Ask question

All categories

3 years ago

8

Scientists are studying a pond. Which property can the scientists measure to understand the amount of energy held by the lake wa

ter?
A. the depth of the lake
B. the color of the water
C. the volume of the lake
D. the temperature of the water

1 answer:

VARVARA [1.3K]3 years ago

5 0

D, the temperature of the lake

You might be interested in

A physics lab group rolls a ball off a horizontal table with a speed of 1.6 m/s. the table is 1.2 m high. how far in the horizon

Brilliant_brown [7]

Answer:

0.784 m

Explanation:

The motion of the ball is a projectile motion, which consists of two independent motions:

- a horizontal uniform motion, with constant speed of $v_0 = 1.6 m/s$

- a vertical accelerated motion, with constant acceleration $g=-9.8 m/s^2$ towards the ground and initial position $y_0 = 1.2 m$

By looking at the vertical motion, we can find the time t at which the ball hits the ground, which is the time t at which the vertical position y becomes zero:

$y(t)=0\\y(t)=y_0 +\frac{1}{2}gt^2\\0=y_0 +\frac{1}{2}gt^2\\t=\sqrt{-\frac{2 y_0}{g}}=\sqrt{-\frac{2\cdot 1.2 m}{-9.8 m/s^2}}=0.49 s$

And now we can use the horizontal motion to find the total horizontal distance traveled during this time interval:

$S_x = v t=(1.6 m/s)(0.49 s)=0.784 m$

4 0

3 years ago

Until a train is a safe distance from the station, it must travel at 5 m/s. Once ti

LuckyWell [14K]

Answer:

60

Explanation:

3 0

3 years ago

What is the acceleration of an object if the force equals 300 N and the mass is 25kg?

adelina 88 [10]

Answer:

Explanation: If a net force of 50 N pulls on a 10 kg object, how much acceleration will it cause? Then an answer is possible. Equation: Net force = mass * acceleration.

8 0

3 years ago

A roller coaster needs to climb a tall hill. How tall of a hill can it climb with an initial

iren [92.7K]

Answer:

h = 11.25m

Explanation:

mgh = 1/2mv2

gh = 1/2v2

10 x h = 1/2 x 15 x 15

20 x h = 225

h = 225/20

h = 11.25m

3 0

4 years ago

Please help calculate them<br> A-f please very urganr

valentina_108 [34]

Three 40w lamp for 6 hours

8 0

4 years ago