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
kirill [66]
3 years ago
12

A rifle can shoot a 4.20-g bullet at a speed of 965 m/s.a)Find the KE of the bullet at this speed.b) What work is done on the bu

llet if it starts from rest?c) If thework is done over a distance of 0.75 m, what is the average force on the bullet?d) If the bullet comes to rest by pushing 1.5 cm into metal, what is the magnitude and direction of the average force the metal exerts?
Physics
1 answer:
olga55 [171]3 years ago
6 0

Answer:

a)  1955.6 J

b) 1955.6 J

c) 2607 N

d) 110373 J

Explanation:

a) Kinetic\ Energy = \frac{1}{2} mv^2 = \frac{1}{2} \times  \frac{4.2}{1000} \times  965^2 = 1955.6 J

b) Work done on bullet should be increase in KE = 1955.6 J

c) Work done = Force \times displacement = KE of bullet

              F = \frac{1955.6}{0.75} = 2607 N

d) Work done to stop = KE = F_{stop} \times d_{stop}

F_{stop} = \frac{1955.6}{\frac{1.5}{100}} = 110373 J

You might be interested in
Compare and contrast offensive and defensive roles in team sports.
strojnjashka [21]
In the offensive role, the players try to get a goal.
In the defensive roll, The players try to protect the goal
Hoped this helped a little :)

4 0
3 years ago
Read 2 more answers
You illuminate the grating in a spectrometer at normal incidence θi=0° with a beam of light that has a wavelength of 6562.8 Å. T
monitta

Answer:

a) θ₁ = 23.14 ° , b) θ₂ = 51.81 °

Explanation:

An address network is described by the expression

     d sin θ = m λ

Where is the distance between lines, λ is the wavelength and m is the order of the spectrum

The distance between one lines, we can find used a rule of proportions

     d = 1/600

     d = 1.67 10⁻³ mm

    d = 1-67 10⁻³ m

Let's calculate the angle

    sin θ = m λ / d

    θ  = sin⁻¹ (m λ / d)

First order

    θ₁ = sin⁻¹ (1 6.5628 10⁻⁷ / 1.67 10⁻⁶)

    θ₁ = sin⁻¹ (3.93 10⁻¹)

    θ₁ = 23.14 °

Second order

     θ₂ = sin⁻¹ (2 6.5628 10⁻⁷ / 1.67 10⁻⁶)

     θ₂ = sin⁻¹ (0.786)

     θ₂ = 51.81 °

3 0
3 years ago
Density of water is 1000kg/m3. Find out the amount of mass of 5m3 water​
Licemer1 [7]

Answer:

5000 m³

Explanation:

density = mass / volume

mass = density × volume

mass = 1000 × 5

mass = 5000 ( kg )

4 0
3 years ago
What relationship exists between the amplitude of a wave and amount of disturbance in the water?
guapka [62]
A wave is a result of the disturbance in the equilibrium state.  There are two types of wave, transverse and longitudinal. Transverse wave affects amplitude while longitudinal wave affects the frequency of the wave. As for the transverse wave, the magnitude of the perpendicular disturbance of the wave is directly proportional to the amplitude of the wave. The higher the transverse disturbance the higher the amplitude.
6 0
3 years ago
Describe the full water cycle
sergey [27]

The water cycle (hydro-logic cycle), explains the constant motion of water on, above and below the surface of the Earth. The mass of water on Earth stays equally constant over time, although the severe portion of the water goes into the major reservoirs of ice, fresh water, saline water and atmospheric water is variable depending on a wide range of climatic variables. The water moves from one reservoir to another, such as from river to ocean, or from the ocean to the atmosphere, by the physical processes of evaporation, condensation, precipitation, infiltration, surface runoff, and subsurface flow. In doing so, the water goes through different forms: liquid, solid (ice) and vapor.

5 0
3 years ago
Other questions:
  • Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of oneâs birth. The on
    11·1 answer
  • A circular loop has radius R and carries current I2 in a clockwise direction. The center of the loop is a distance D above a lon
    10·1 answer
  • Why does the area around the equator stay the same temperature year-round
    8·1 answer
  • Write a question about how changing temperature affects gas
    12·1 answer
  • Un cuerpo se lanza verticalmente hacia arriba con una velocidad de 13 m/s. ¿Cuánto tiempo tarda en alcanzar la altura máxima? a)
    15·1 answer
  • Which statement describes a climate condition?
    13·1 answer
  • Two go-carts, A and B, race each other around a 1.0 track. Go-cart A travels at a constant speed of 20.0 /. Go-cart B accelerate
    9·1 answer
  • What is the formula for Charles Law?
    9·1 answer
  • If a wave is traveling at 200 m/s and its wavelength is 0.5 meters, what is the frequency of the
    10·1 answer
  • Lightning always follows
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!