1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Art [367]
2 years ago
9

HELP MEEEEE (science)

Physics
1 answer:
leva [86]2 years ago
6 0

Answer:

Decreases the friction between the mallet and the pick.

You might be interested in
In music, the note G above middle C has a frequency of about 392 hertz. If the speed of sound in the air is 340 m/s, what is the
morpeh [17]

Answer:

0.87 meters

Explanation:

7 0
2 years ago
A 5.45-g combustible sample is burned in a calorimeter. the heat generated changes the temperature of 555 g of water from 20.5°c
Y_Kistochka [10]
Given:
m = 555 g, the mass of water in the calorimeter
ΔT = 39.5 - 20.5 = 19 °C, temperature change
c = 4.18 J/(°C-g), specific heat of  water

Assume that all generated heat goes into heating the water.
Then the energy released is
Q = mcΔT
    = (555 g)*(4.18 J/(°C-g)*(19 °C)
    = 44,078.1 J
    = 44,100 J (approximately)

Answer:  44,100 J

3 0
3 years ago
Spaceship 1 and Spaceship 2 have equal masses of 300kg. They collide. Spaceship 1's final speed is 3 m/s, and Spaceship 2's fina
fiasKO [112]

Answer:

B. 1500 kg*m/s

Explanation:

Momentum p = m* v

In any type of collision, the total momentum is preserved!

The total momentum before and the total momentum after the collision is the same. We know the mass and speed after the collision so we can calculate the total momentum.

p1 + p2 =

m1*v1 + m2*v2

m1 = me = 300 kg

v1 = 3 m/s

v2 = 2 m/s

Substitute the given numbers:

300*3 + 300+2

900 + 600

1500 kg*m/s, which is answer B.

3 0
3 years ago
A plece of titanium has a mass of 67.5g and a volume of 15cm<br> What is the density?
sveta [45]

Answer:

4.5g/cm^3

Explanation:

Here, Mass(m)=67.5g

         Volume(v)=15cm^3

Now, According to formula,

        Density(p)=m/v

                         =67.5/15

                         =4.5g/cm^3

8 0
3 years ago
A tortoise and a hare are having a 1,000-meter race. The tortolse runs the
lukranit [14]

Answer:2 hours

Explanation:

6 0
3 years ago
Other questions:
  • Help with this please
    8·1 answer
  • Why couldn't the Royal Society publish Newton's Principia?
    15·1 answer
  • Physics Question:<br> (ignore the part crossed in red) 14459688
    15·1 answer
  • Express the volume expansivity and the isothermal compressibility as functions of density rho and its partial derivatives. For w
    6·1 answer
  • What is the name of the spacecraft that has travels the farthest away from earth
    5·2 answers
  • A student sits on a pivoted stool while holding a pair of weights. The stool is free to rotate about a vertical axis with neglig
    15·1 answer
  • PLeAsE hElp <br> What is the kinetic energy of 14 Kg traveling at a velocity of 3m/s east
    13·1 answer
  • Which object has the most Kinetic Energy, and why?
    6·2 answers
  • 2) A molecule of hydrochloric acid HCl contains one atom of hydrogen and *
    7·1 answer
  • How far should flammable material be kept from electrical panels?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!